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      前后端分离开发相关
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        <a href="/2022/06/04/%E6%9C%89%E5%85%B3%E5%89%8D%E5%90%8E%E7%AB%AF%E5%88%86%E7%A6%BB%E5%BC%80%E5%8F%91/" class="archive-article-date">
  	<time datetime="2022-06-03T16:00:00.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2022-06-04</time>
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        <p>!!更新了express+vite的前后端分离项目开发</p>
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<h2 id="1、后端项目"><a href="#1、后端项目" class="headerlink" title="1、后端项目"></a>1、后端项目</h2><h3 id="1-1、预备项目"><a href="#1-1、预备项目" class="headerlink" title="1.1、预备项目"></a>1.1、预备项目</h3><h4 id="1-1-1、新建项目"><a href="#1-1-1、新建项目" class="headerlink" title="1.1.1、新建项目"></a>1.1.1、新建项目</h4><p>通过 <code>npx</code> 方式、采用 <code>express-generator</code>  创建新项目:</p>
<figure class="highlight sh"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">npx express-generator  user-back-end</span><br></pre></td></tr></table></figure>



<h4 id="1-1-2、调整目录"><a href="#1-1-2、调整目录" class="headerlink" title="1.1.2、调整目录"></a>1.1.2、调整目录</h4><p>删除不必要的目录和文件，剩余的文件和目录结构如下:</p>
<figure class="highlight cmd"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line">user-back-end</span><br><span class="line">      |</span><br><span class="line">      |---------- app.js</span><br><span class="line">      |---------- package.json</span><br><span class="line">      |---------- routes</span><br></pre></td></tr></table></figure>



<h4 id="1-1-3、配置项目"><a href="#1-1-3、配置项目" class="headerlink" title="1.1.3、配置项目"></a>1.1.3、配置项目</h4><p>打开 <code>package.json</code> ，并将其修改为以下内容:</p>
<figure class="highlight json"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line"><span class="punctuation">&#123;</span></span><br><span class="line">  <span class="attr">&quot;name&quot;</span><span class="punctuation">:</span> <span class="string">&quot;user-back-end&quot;</span><span class="punctuation">,</span></span><br><span class="line">  <span class="attr">&quot;version&quot;</span><span class="punctuation">:</span> <span class="string">&quot;0.0.0&quot;</span><span class="punctuation">,</span></span><br><span class="line">  <span class="attr">&quot;private&quot;</span><span class="punctuation">:</span> <span class="keyword">true</span><span class="punctuation">,</span></span><br><span class="line">  <span class="attr">&quot;scripts&quot;</span><span class="punctuation">:</span> <span class="punctuation">&#123;</span></span><br><span class="line">    <span class="attr">&quot;start&quot;</span><span class="punctuation">:</span> <span class="string">&quot;nodemon app.js&quot;</span></span><br><span class="line">  <span class="punctuation">&#125;</span><span class="punctuation">,</span></span><br><span class="line">  <span class="attr">&quot;dependencies&quot;</span><span class="punctuation">:</span> <span class="punctuation">&#123;</span></span><br><span class="line">    <span class="attr">&quot;express&quot;</span><span class="punctuation">:</span> <span class="string">&quot;~4.18.1&quot;</span><span class="punctuation">,</span></span><br><span class="line">    <span class="attr">&quot;morgan&quot;</span><span class="punctuation">:</span> <span class="string">&quot;~1.10.0&quot;</span></span><br><span class="line">  <span class="punctuation">&#125;</span></span><br><span class="line"><span class="punctuation">&#125;</span></span><br></pre></td></tr></table></figure>



<h4 id="1-1-5、后端路由"><a href="#1-1-5、后端路由" class="headerlink" title="1.1.5、后端路由"></a>1.1.5、后端路由</h4><p>在 <code>routes</code> 目录下创建 <code>user.js</code> 文件，其中内容暂定如下:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">const</span> express = <span class="built_in">require</span>(<span class="string">&#x27;express&#x27;</span>);</span><br><span class="line"></span><br><span class="line"><span class="comment">// 创建Router实例</span></span><br><span class="line"><span class="keyword">const</span> router = express.<span class="title class_">Router</span>();</span><br><span class="line"></span><br><span class="line"><span class="comment">// 导出Router实例</span></span><br><span class="line"><span class="variable language_">module</span>.<span class="property">exports</span> = router ;</span><br></pre></td></tr></table></figure>



<h4 id="1-1-5、修改app-js"><a href="#1-1-5、修改app-js" class="headerlink" title="1.1.5、修改app.js"></a>1.1.5、修改<code>app.js</code></h4><p>修改 <code>app.js</code> 为以下形式:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">const</span> express = <span class="built_in">require</span>(<span class="string">&#x27;express&#x27;</span>);</span><br><span class="line"><span class="keyword">const</span> logger = <span class="built_in">require</span>(<span class="string">&#x27;morgan&#x27;</span>);</span><br><span class="line"></span><br><span class="line"><span class="keyword">const</span> userRouter = <span class="built_in">require</span>(<span class="string">&#x27;./routes/user.js&#x27;</span>);</span><br><span class="line"></span><br><span class="line"><span class="keyword">const</span> port = <span class="number">3000</span>;</span><br><span class="line"><span class="keyword">const</span> app = <span class="title function_">express</span>();</span><br><span class="line"></span><br><span class="line"><span class="comment">// 启用日志中间件</span></span><br><span class="line">app.<span class="title function_">use</span>( <span class="title function_">logger</span>(<span class="string">&#x27;dev&#x27;</span>) );</span><br><span class="line"></span><br><span class="line"><span class="comment">// 处理请求体中 application/json 数据</span></span><br><span class="line">app.<span class="title function_">use</span>( express.<span class="title function_">json</span>() );</span><br><span class="line"></span><br><span class="line"><span class="comment">// 处理请求体中 application/x-www-form-urlencoded 数据</span></span><br><span class="line">app.<span class="title function_">use</span>( express.<span class="title function_">urlencoded</span>(&#123; <span class="attr">extended</span>: <span class="literal">false</span> &#125;) );</span><br><span class="line"></span><br><span class="line"><span class="comment">// 启用后端路由</span></span><br><span class="line">app.<span class="title function_">use</span>( userRouter );</span><br><span class="line"></span><br><span class="line">app.<span class="title function_">listen</span>( port , <span class="function">()=&gt;</span><span class="variable language_">console</span>.<span class="title function_">log</span>(<span class="string">`后端服务正在监听<span class="subst">$&#123;port&#125;</span>端口`</span>) );</span><br></pre></td></tr></table></figure>



<h4 id="1-1-6、安装依赖"><a href="#1-1-6、安装依赖" class="headerlink" title="1.1.6、安装依赖"></a>1.1.6、安装依赖</h4><p>首先确保进入到 <code>user-back-end</code> 项目目录中，随后执行 <code>npm install </code> 即可安装依赖。</p>
<h4 id="1-1-7、启动项目"><a href="#1-1-7、启动项目" class="headerlink" title="1.1.7、启动项目"></a>1.1.7、启动项目</h4><p>首先确保进入到 <code>user-back-end</code> 项目目录中，随后执行 <code>npm run start</code> 即可启动项目。</p>
<h3 id="1-2、基础设施"><a href="#1-2、基础设施" class="headerlink" title="1.2、基础设施"></a>1.2、基础设施</h3><h4 id="1-2-1、访问数据库"><a href="#1-2-1、访问数据库" class="headerlink" title="1.2.1、访问数据库"></a>1.2.1、访问数据库</h4><p>这里采用 MySQL作为数据存储支持。</p>
<h5 id="1-、安装依赖"><a href="#1-、安装依赖" class="headerlink" title="(1)、安装依赖"></a>(1)、安装依赖</h5><p>为了能够使用 <code>sequelize</code> 访问 MySQL 数据库，则需要安装以下依赖</p>
<ul>
<li><code>mysql2</code></li>
<li><code>sequelize</code></li>
</ul>
<p>采用以下方式完成安装:</p>
<figure class="highlight sh"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">npm install mysql2 sequelize</span><br></pre></td></tr></table></figure>



<h5 id="2-、配置连接"><a href="#2-、配置连接" class="headerlink" title="(2)、配置连接"></a>(2)、配置连接</h5><p>在 <code>user-back-end</code> 项目目录中创建 <code>config</code> 目录并在其中创建 <code>sequelize.js</code> 文件，其中内容如下:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">const</span> &#123; <span class="title class_">Sequelize</span> &#125; = <span class="built_in">require</span>(<span class="string">&#x27;sequelize&#x27;</span>);</span><br><span class="line"></span><br><span class="line"><span class="keyword">const</span> instance = <span class="keyword">new</span> <span class="title class_">Sequelize</span>(&#123;</span><br><span class="line">    <span class="comment">// 数据库主机地址</span></span><br><span class="line">    <span class="attr">host</span>: <span class="string">&#x27;localhost&#x27;</span>,</span><br><span class="line">    <span class="comment">// 数据库服务端的端口</span></span><br><span class="line">    <span class="attr">port</span>: <span class="number">3306</span> ,</span><br><span class="line">    <span class="comment">// 数据库用户名</span></span><br><span class="line">    <span class="attr">username</span>: <span class="string">&#x27;root&#x27;</span> ,</span><br><span class="line">    <span class="comment">// 数据库密码</span></span><br><span class="line">    <span class="attr">password</span>: <span class="string">&#x27;&#x27;</span> ,</span><br><span class="line">    <span class="comment">// 指定数据库名称</span></span><br><span class="line">    <span class="attr">database</span>: <span class="string">&#x27;ecut&#x27;</span>,</span><br><span class="line">    <span class="comment">// 不论使用的驱动是 `mysql` 还是 `mysql2` 这里的方言都要写 `mysql`</span></span><br><span class="line">    <span class="attr">dialect</span>: <span class="string">&#x27;mysql&#x27;</span>,</span><br><span class="line">    <span class="comment">// 指定时区</span></span><br><span class="line">    <span class="attr">timezone</span>: <span class="string">&#x27;+08:00&#x27;</span>,</span><br><span class="line">    <span class="comment">// 配置数据库连接池</span></span><br><span class="line">    <span class="attr">pool</span>: &#123;</span><br><span class="line">        <span class="attr">max</span>: <span class="number">5</span>,</span><br><span class="line">        <span class="attr">min</span>: <span class="number">0</span>,</span><br><span class="line">        <span class="attr">acquire</span>: <span class="number">30000</span>,</span><br><span class="line">        <span class="attr">idle</span>: <span class="number">10000</span></span><br><span class="line">    &#125;</span><br><span class="line">&#125;);</span><br><span class="line"></span><br><span class="line"><span class="variable language_">module</span>.<span class="property">exports</span> = instance ;</span><br></pre></td></tr></table></figure>



<h5 id="3-、测试连接"><a href="#3-、测试连接" class="headerlink" title="(3)、测试连接"></a>(3)、测试连接</h5><p>在 <code>user-back-end</code> 项目目录中创建 <code>test</code> 目录并在其中创建 <code>sequelize.test.js</code>:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">const</span> sequelize = <span class="built_in">require</span>(<span class="string">&#x27;../config/sequelize&#x27;</span>);</span><br><span class="line"><span class="variable language_">console</span>.<span class="title function_">log</span>( sequelize );</span><br></pre></td></tr></table></figure>



<h4 id="1-2-2、生成随机值"><a href="#1-2-2、生成随机值" class="headerlink" title="1.2.2、生成随机值"></a>1.2.2、生成随机值</h4><p>为了能够随机产生字符串，我们可以借助于 <code>randomstring</code> 等第三方实现来完成。</p>
<p>这里采用 <code>nanoid</code> 来随机产生唯一的字符串值。</p>
<h5 id="1-、安装依赖-1"><a href="#1-、安装依赖-1" class="headerlink" title="(1)、安装依赖"></a>(1)、安装依赖</h5><figure class="highlight sh"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">npm install nanoid</span><br></pre></td></tr></table></figure>



<h5 id="2-、封装函数"><a href="#2-、封装函数" class="headerlink" title="(2)、封装函数"></a>(2)、封装函数</h5><p>在 <code>user-back-end</code> 项目目录中创建 <code>utils</code> 目录，并在其中创建 <code>string.helper.js</code>  文件。</p>
<p>在 <code>utils/string.helper.js</code>中定义用来随机生成字符串的方法:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// 从 nanoid 模块中导入 customAlphabet 函数</span></span><br><span class="line"><span class="keyword">const</span> &#123; customAlphabet &#125; = <span class="built_in">require</span>(<span class="string">&#x27;nanoid&#x27;</span>);</span><br><span class="line"></span><br><span class="line"><span class="comment">// 自定义字母表</span></span><br><span class="line"><span class="keyword">const</span> alphabet = <span class="string">&#x27;0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ&#x27;</span>;</span><br><span class="line"></span><br><span class="line"><span class="comment">// 形参 size 表示随机生成的字符串的长度 ( 后面的 10 表示默认值 )</span></span><br><span class="line"><span class="keyword">const</span> <span class="title function_">random</span> = (<span class="params"> size = <span class="number">10</span> </span>) =&gt; &#123;</span><br><span class="line">    <span class="comment">// 采用自定义字母表和自定义字符串长度创建一个新的随机字符串生成器</span></span><br><span class="line">    <span class="keyword">let</span> generate = <span class="title function_">customAlphabet</span>( alphabet , size );</span><br><span class="line">    <span class="comment">// 调用 generate 函数随机产生字符串</span></span><br><span class="line">    <span class="keyword">let</span> randomstring = <span class="title function_">generate</span>();</span><br><span class="line">    <span class="keyword">return</span> randomstring;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="variable language_">module</span>.<span class="property">exports</span> = &#123;</span><br><span class="line">    random</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>



<h5 id="3-、测试"><a href="#3-、测试" class="headerlink" title="(3)、测试"></a>(3)、测试</h5><p>在 <code>test/string.random.test.js</code> 文件中测试随机产生字符串:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">const</span> helper = <span class="built_in">require</span>(<span class="string">&#x27;../utils/string.helper&#x27;</span>);</span><br><span class="line"></span><br><span class="line"><span class="keyword">let</span> str = helper.<span class="title function_">random</span>();</span><br><span class="line"><span class="variable language_">console</span>.<span class="title function_">log</span>( str , str.<span class="property">length</span> );</span><br><span class="line"></span><br><span class="line">str = helper.<span class="title function_">random</span>(<span class="number">4</span>);</span><br><span class="line"><span class="variable language_">console</span>.<span class="title function_">log</span>( str , str.<span class="property">length</span> );</span><br><span class="line"></span><br><span class="line">str = helper.<span class="title function_">random</span>(<span class="number">16</span>);</span><br><span class="line"><span class="variable language_">console</span>.<span class="title function_">log</span>( str , str.<span class="property">length</span> );</span><br></pre></td></tr></table></figure>



<h4 id="1-2-3、加密"><a href="#1-2-3、加密" class="headerlink" title="1.2.3、加密"></a>1.2.3、加密</h4><p>借助于 <code>node.js</code> 中提供的 <code>crypto</code> 模块提供的支持即可完成字符串加密操作。</p>
<h5 id="1-、封装函数"><a href="#1-、封装函数" class="headerlink" title="(1)、封装函数"></a>(1)、封装函数</h5><p>在 <code>utils/string.helper.js</code>中定义用来加密字符串的方法:</p>
<figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">const</span> <span class="title function_">encrypt</span> = (<span class="params">source,salt=<span class="string">&#x27;&#x27;</span>,algorithm=<span class="string">&#x27;SHA1&#x27;</span></span>) =&gt; &#123;</span><br><span class="line">    <span class="comment">// 根据 加密算法名称 和 盐值 创建 crypto.Hmac 实例</span></span><br><span class="line">    <span class="keyword">let</span> hmac = crypto.<span class="title function_">createHmac</span>( algorithm , salt );</span><br><span class="line">    <span class="comment">// 对 source 进行加密处理</span></span><br><span class="line">    hmac.<span class="title function_">update</span>( source );</span><br><span class="line">    <span class="comment">// 将加密后的内容以 `hex` 形式转换为字符串形式</span></span><br><span class="line">    <span class="keyword">let</span> encrypted = hmac.<span class="title function_">digest</span>( <span class="string">&#x27;hex&#x27;</span> );</span><br><span class="line">    <span class="comment">// 返回加密后的字符串</span></span><br><span class="line">    <span class="keyword">return</span> encrypted;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<p>最后将该函数导出:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line"><span class="variable language_">module</span>.<span class="property">exports</span> = &#123;</span><br><span class="line">    ...</span><br><span class="line">    encrypt</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>



<h5 id="2-、测试加密"><a href="#2-、测试加密" class="headerlink" title="(2)、测试加密"></a>(2)、测试加密</h5><p>在 <code>test/string.encrypt.test.js</code> 文件中测试加密字符串:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">const</span> helper = <span class="built_in">require</span>(<span class="string">&#x27;../utils/string.helper&#x27;</span>);</span><br><span class="line"></span><br><span class="line"><span class="keyword">const</span> salt = helper.<span class="title function_">random</span>(<span class="number">4</span>);</span><br><span class="line"><span class="variable language_">console</span>.<span class="title function_">log</span>( salt );</span><br><span class="line"></span><br><span class="line"><span class="keyword">const</span> soruce = <span class="string">&#x27;hello&#x27;</span>;</span><br><span class="line"></span><br><span class="line"><span class="comment">// let encrypted = helper.encrypt( soruce , salt , &#x27;SHA256&#x27;);</span></span><br><span class="line"><span class="keyword">let</span> encrypted = helper.<span class="title function_">encrypt</span>( soruce , salt );</span><br><span class="line"></span><br><span class="line"><span class="variable language_">console</span>.<span class="title function_">log</span>( encrypted );</span><br><span class="line"><span class="variable language_">console</span>.<span class="title function_">log</span>( encrypted.<span class="property">length</span> );</span><br></pre></td></tr></table></figure>



<h4 id="1-2-4、JWT"><a href="#1-2-4、JWT" class="headerlink" title="1.2.4、JWT"></a>1.2.4、JWT</h4><h5 id="1-、走进JWT"><a href="#1-、走进JWT" class="headerlink" title="(1)、走进JWT"></a>(1)、走进JWT</h5><p><code>Json Web Token</code>（ 缩写 JWT ）是目前最流行的跨域认证解决方案。( <a target="_blank" rel="noopener" href="https://www.ruanyifeng.com/blog/2018/07/json_web_token-tutorial.html">阮一峰博客</a> )</p>
<p>JWT的构成:</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">Header.Payload.Signature</span><br></pre></td></tr></table></figure>

<p>其中:</p>
<ul>
<li>Header（头部）</li>
<li>Payload（负载）<ul>
<li>也称作<strong>载荷</strong></li>
</ul>
</li>
<li>Signature（签名）</li>
</ul>
<h5 id="2-、安装依赖"><a href="#2-、安装依赖" class="headerlink" title="(2)、安装依赖"></a>(2)、安装依赖</h5><p>在 <code>express</code> 环境中使用 <code>Json Web Token</code>通常可以通过 <code>jsonwebtoken</code> 、<code>express-jwt</code> 来实现。</p>
<p>在确保已经进入到 <code>user-back-end</code> 项目目录后，执行以下命令来安装依赖:</p>
<figure class="highlight sh"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">npm install jsonwebtoken express-jwt</span><br></pre></td></tr></table></figure>

<p>其中:</p>
<ul>
<li>使用 <code>jsonwebtoken</code>模块提供的支持可以创建 <code>Json Web Token</code></li>
<li>使用 <code>express-jwt</code>模块提供的支持可以在 <code>express</code> 中解析 <code>Json Web Token</code></li>
</ul>
<h5 id="3-、创建-JWT"><a href="#3-、创建-JWT" class="headerlink" title="(3)、创建 JWT"></a>(3)、创建 JWT</h5><p>首先导入 <code>jsonwebtoken</code> 模块:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">const</span> jsonwebtoken = <span class="built_in">require</span>( <span class="string">&#x27;jsonwebtoken&#x27;</span> );</span><br></pre></td></tr></table></figure>

<p>在需要生成 JSON Web Token 的地方使用以下代码:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">jsonwebtoken.<span class="title function_">sign</span>( payload, secretOrPrivateKey, [options, callback] )</span><br></pre></td></tr></table></figure>

<p>注意:</p>
<ul>
<li>第一个参数 <code>payload</code> 表示在 <code>token</code> 的<strong>载荷</strong>中存放的数据，它需要是个纯对象</li>
<li>第二个参数 <code>secretOrPrivateKey</code> 表示 密文 或 私钥</li>
<li>第三个参数 <code>options</code> 是可选的，通常在第三个参数中设置以下选项<ul>
<li><code>algorithm </code>  选项用于设置算法名称  (默认值是 <code>HS256</code> )</li>
<li><code>expiresIn</code> 选项用于设置 token 的有效时间</li>
<li><code>notBefore</code></li>
<li><code>audience</code></li>
<li><code>issuer</code></li>
<li><code>jwtid</code></li>
<li><code>subject</code></li>
<li><code>noTimestamp</code></li>
<li><code>header</code></li>
<li><code>keyid</code></li>
<li><code>mutatePayload</code></li>
</ul>
</li>
<li>第四个参数 callback 是回调函数<ul>
<li>当成功创建 JWT 后 或 抛出异常后 就会调用 callback 函数</li>
</ul>
</li>
</ul>
<p>比如:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">const</span> payload = &#123; <span class="attr">account</span>: <span class="string">&#x27;sanfeng&#x27;</span> &#125;;</span><br><span class="line"><span class="keyword">const</span> secret = <span class="string">&#x27;sino&#x27;</span>;</span><br><span class="line"><span class="keyword">const</span> options = &#123; <span class="attr">expiresIn</span>: <span class="number">3600</span> , <span class="attr">algorithm</span>: <span class="string">&#x27;HS256&#x27;</span> &#125;</span><br><span class="line"></span><br><span class="line"><span class="keyword">let</span> token = jsonwebtoken.<span class="title function_">sign</span>( payload, secret, options );</span><br><span class="line"><span class="variable language_">console</span>.<span class="title function_">log</span>( token );</span><br></pre></td></tr></table></figure>

<p>此时生成的 <code>Json Web Token</code> 是:</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line">eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.</span><br><span class="line">eyJhY2NvdW50Ijoic2FuZmVuZyIsImlhdCI6MTY1MjM0NjA3MCwiZXhwIjoxNjUyMzQ5NjcwfQ.</span><br><span class="line">-dZ_y4VDywhgr-B9c-bBnHyO88drSKWLRallP-dLWbM</span><br></pre></td></tr></table></figure>



<h5 id="4-、认证方式"><a href="#4-、认证方式" class="headerlink" title="(4)、认证方式"></a>(4)、认证方式</h5><p>客户端收到服务器返回的 <code>Json Web Token</code> ，可以储存在 Cookie 里面，也可以储存在 <code>localStorage</code> 或 <code>sessionStorage</code>。</p>
<p>此后，客户端每次与服务器通信，都要带上这个  <code>Json Web Token</code> 。</p>
<p>如果  <code>Json Web Token</code> 是放在 Cookie 中，则每次请求时会通过请求头自动发送，但是这样不能跨域。</p>
<p>所以更好的做法是在 HTTP 请求的头信息<code>authorization</code>字段里面:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="attr">authorization</span>: <span class="title class_">Bearer</span> token</span><br></pre></td></tr></table></figure>

<p>冒号之前的 <code>authorization</code> 表示 HTTP 请求头中的 字段名称，冒号之后的就是该字段对应的取值。</p>
<p>其中:</p>
<ul>
<li><code>Bearer</code> 表示 <code>Json Web Token</code> 的认证方式</li>
<li><code>token</code> 表示  <code>Json Web Token</code></li>
<li>认证方式和 token 之间使用<strong>空格</strong>隔开</li>
</ul>
<p>将来通过 后端路由 向客户端返回 认证信息 时，既要包含 认证方式 也要包含  <code>Json Web Token</code> :</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">const</span> auth = <span class="string">&#x27;Bearer &#x27;</span> + jsonwebtoken.<span class="title function_">sign</span>( payload, secret, options );</span><br><span class="line">resp.<span class="title function_">json</span>( &#123; <span class="attr">code</span>: <span class="number">1021</span> , <span class="attr">result</span>: &#123; <span class="attr">authorization</span>: auth &#125; &#125; );</span><br></pre></td></tr></table></figure>



<h5 id="5-、解析-JWT"><a href="#5-、解析-JWT" class="headerlink" title="(5)、解析 JWT"></a>(5)、解析 JWT</h5><p>在 <code>express</code> 应用中可以通过 <code>express-jwt</code> 中间件来解析接受到的  <code>Json Web Token</code> 。</p>
<p>在 <code>user-back-end</code> 项目的 <code>app.js</code> 中首先导入 <code>express-jwt</code> :</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// 当使用 `express-jwt` 的 `7.7.0` 时需要采用解构赋值来获取 expressjwt 函数</span></span><br><span class="line"><span class="keyword">const</span> &#123; expressjwt &#125; = <span class="built_in">require</span>(<span class="string">&#x27;express-jwt&#x27;</span>);</span><br></pre></td></tr></table></figure>

<p>创建中间件:</p>
<figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">const</span> jwtMiddleware = <span class="title function_">expressjwt</span>(&#123; </span><br><span class="line">    <span class="attr">secret</span>: <span class="string">&#x27;sino&#x27;</span> , </span><br><span class="line">    <span class="attr">algorithms</span>: [<span class="string">&#x27;HS256&#x27;</span>],</span><br><span class="line">    <span class="attr">credentialsRequired</span>: <span class="literal">false</span></span><br><span class="line">&#125;).<span class="title function_">unless</span>(&#123;</span><br><span class="line">    <span class="attr">path</span>:[<span class="string">&#x27;/user/sign/in&#x27;</span>]</span><br><span class="line">&#125;);</span><br></pre></td></tr></table></figure>

<p>注意:</p>
<ul>
<li>此时使用的 密钥 与 算法 需要与生成 <code>Json Web Token</code> 时所使用的保持一致</li>
<li>在 <code>unless</code> 的参数中通过 <code>path</code> 选项可以设置被排除的路由路径</li>
</ul>
<p>启用中间件解析Token:</p>
<figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">app.<span class="title function_">use</span>( jwtMiddleware );</span><br></pre></td></tr></table></figure>

<p>经过 <code>jwtMiddleware</code> 处理后， <code>Json Web Token</code>  中 <code>payload</code> 被 “还原” 成 JavaScript 对象，并将其绑定到请求对象中。</p>
<ul>
<li>在 <code>express-jwt 6.x</code> 中，请求对象中与 <code>payload</code> 对应的属性名称默认是 <code>user</code> </li>
<li>在 <code>express-jwt 7.x</code> 中，请求对象中与 <code>payload</code> 对应的属性名称默认是 <code>auth</code> </li>
</ul>
<h5 id="6-、获取数据"><a href="#6-、获取数据" class="headerlink" title="(6)、获取数据"></a>(6)、获取数据</h5><p>在需要识别客户端是否携带Token的后端路由中，可以通过请求对象来获取解析后的<code>payload</code>数据</p>
<ul>
<li><code>express-jwt 6.x</code></li>
</ul>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">req.<span class="property">user</span></span><br></pre></td></tr></table></figure>

<ul>
<li><code>express-jwt 7.x</code></li>
</ul>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">req.<span class="property">auth</span></span><br></pre></td></tr></table></figure>



<blockquote>
<p>需要注意 <code>express-jwt</code> 的 <code>6.x</code> 与 <code>7.x</code> 的区别。</p>
</blockquote>
<h5 id="7-、约定配置"><a href="#7-、约定配置" class="headerlink" title="(7)、约定配置"></a>(7)、约定配置</h5><p>在 <code>express</code> 环境下使用 <code>jsonwebtoken</code> 和 <code>express-jwt</code> 时需要约定相关的配置。</p>
<p>这些配置可以放置在 <code>config</code> 目录下的 <code>token.js</code> 文件中:</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line">const config = &#123;</span><br><span class="line">    // 密钥</span><br><span class="line">    secret: &#x27;sino&#x27;,</span><br><span class="line">    // 有效期</span><br><span class="line">    expiresIn: 3600,</span><br><span class="line">    // 算法</span><br><span class="line">    algorithm: &#x27;HS256&#x27; ,</span><br><span class="line">    // 被排除的路径</span><br><span class="line">    unlessPaths: [&#x27;/user/sign/in&#x27;]</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line">module.exports = config ;</span><br></pre></td></tr></table></figure>







<h3 id="1-3、Model"><a href="#1-3、Model" class="headerlink" title="1.3、Model"></a>1.3、Model</h3><p>在 <code>user-back-end</code> 项目目录中创建 <code>models</code> 目录用来存放 Model 。</p>
<h4 id="1-3-1、数据库表"><a href="#1-3-1、数据库表" class="headerlink" title="1.3.1、数据库表"></a>1.3.1、数据库表</h4><p>创建用户表<code>t_users</code>:</p>
<figure class="highlight sql"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">DROP</span> <span class="keyword">TABLE</span> IF <span class="keyword">EXISTS</span> t_users ;</span><br><span class="line"></span><br><span class="line"><span class="keyword">CREATE</span> <span class="keyword">TABLE</span> `t_users` (</span><br><span class="line">    `id` <span class="type">INT</span> auto_increment COMMENT <span class="string">&#x27;编号&#x27;</span>,</span><br><span class="line">    `account` <span class="type">VARCHAR</span>(<span class="number">20</span>) COMMENT <span class="string">&#x27;账号&#x27;</span>,</span><br><span class="line">    `email` <span class="type">VARCHAR</span>(<span class="number">50</span>) COMMENT <span class="string">&#x27;邮箱&#x27;</span>,</span><br><span class="line">    `tel` <span class="type">VARCHAR</span>(<span class="number">11</span>) COMMENT <span class="string">&#x27;手机号&#x27;</span>,</span><br><span class="line">    `password` <span class="type">VARCHAR</span>(<span class="number">40</span>) <span class="keyword">NOT</span> <span class="keyword">NULL</span> COMMENT <span class="string">&#x27;采用SHA1加密后的密码&#x27;</span>,</span><br><span class="line">    `salt` <span class="type">VARCHAR</span>(<span class="number">4</span>) <span class="keyword">NOT</span> <span class="keyword">NULL</span> COMMENT <span class="string">&#x27;加密时使用的盐值&#x27;</span>,</span><br><span class="line">    <span class="keyword">PRIMARY</span> KEY( `id` )</span><br><span class="line">);</span><br></pre></td></tr></table></figure>

<p>这里需要注意 <code>account</code> 、<code>email</code> 、<code>tel</code> 都可以用来作为登录名称使用，因此注册时它们三个至少需要填写一个。</p>
<h4 id="1-3-2、定义模型"><a href="#1-3-2、定义模型" class="headerlink" title="1.3.2、定义模型"></a>1.3.2、定义模型</h4><p>在 <code>models</code> 目录下创建 <code>user.js</code> 并在其中定义 <code>User</code> 模型:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">const</span> &#123; <span class="title class_">Model</span> , <span class="title class_">DataTypes</span> &#125; = <span class="built_in">require</span>(<span class="string">&#x27;sequelize&#x27;</span>);</span><br><span class="line"></span><br><span class="line"><span class="keyword">const</span> sequelize = <span class="built_in">require</span>(<span class="string">&#x27;../config/sequelize&#x27;</span>);</span><br><span class="line"></span><br><span class="line"><span class="keyword">class</span> <span class="title class_">User</span> <span class="keyword">extends</span> <span class="title class_ inherited__">Model</span> &#123;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="keyword">const</span> attributes = &#123;</span><br><span class="line">    <span class="attr">id</span>: &#123;</span><br><span class="line">        <span class="attr">type</span>: <span class="title class_">DataTypes</span>.<span class="property">INTEGER</span>,</span><br><span class="line">        <span class="attr">autoIncrement</span>: <span class="literal">true</span>,</span><br><span class="line">        <span class="attr">primaryKey</span>: <span class="literal">true</span>,</span><br><span class="line">        <span class="attr">field</span>: <span class="string">`id`</span></span><br><span class="line">    &#125;,</span><br><span class="line">    <span class="attr">account</span>: <span class="title class_">DataTypes</span>.<span class="property">STRING</span>,</span><br><span class="line">    <span class="attr">email</span>: <span class="title class_">DataTypes</span>.<span class="property">STRING</span>,</span><br><span class="line">    <span class="attr">tel</span>: <span class="title class_">DataTypes</span>.<span class="property">STRING</span>,</span><br><span class="line">    <span class="attr">password</span>: &#123;</span><br><span class="line">        <span class="attr">type</span>: <span class="title class_">DataTypes</span>.<span class="property">STRING</span></span><br><span class="line">    &#125;,</span><br><span class="line">    <span class="attr">salt</span>: <span class="title class_">DataTypes</span>.<span class="property">STRING</span></span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="keyword">const</span> options = &#123;</span><br><span class="line">    <span class="attr">tableName</span>: <span class="string">&#x27;t_users&#x27;</span>,</span><br><span class="line">    sequelize , <span class="comment">/* `sequelize` 是 `sequelize: sequelize` 的简写  */</span></span><br><span class="line">    <span class="comment">/* 指定 timestamps 为 false 表示在数据库表中不使用 createAt 和 updateAt 字段 */</span></span><br><span class="line">    <span class="attr">timestamps</span>: <span class="literal">false</span></span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="title class_">User</span>.<span class="title function_">init</span>( attributes , options );</span><br><span class="line"></span><br><span class="line"><span class="variable language_">module</span>.<span class="property">exports</span> = <span class="title class_">User</span> ;</span><br></pre></td></tr></table></figure>



<h4 id="1-3-3、测试模型"><a href="#1-3-3、测试模型" class="headerlink" title="1.3.3、测试模型"></a>1.3.3、测试模型</h4><p>在 <code>test</code> 目录中创建 <code>user.model.test.js</code> 并在其中测试 <code>User</code> 模型:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">const</span> <span class="title class_">User</span> = <span class="built_in">require</span>(<span class="string">&#x27;../models/user&#x27;</span>);</span><br><span class="line"></span><br><span class="line"><span class="keyword">let</span> user = &#123;</span><br><span class="line">    <span class="attr">account</span>: <span class="string">&#x27;11223344&#x27;</span>,</span><br><span class="line">    <span class="attr">email</span>: <span class="string">&#x27;hello@world.com&#x27;</span>,</span><br><span class="line">    <span class="attr">password</span>: <span class="string">&#x27;hellocrypto&#x27;</span>,</span><br><span class="line">    <span class="attr">salt</span>: <span class="string">&#x27;abcd&#x27;</span>    </span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="title class_">User</span>.<span class="title function_">create</span>( user ).<span class="title function_">then</span>( <span class="function"><span class="params">result</span> =&gt;</span> &#123;</span><br><span class="line">    <span class="comment">// console.log( &#x27;result: &#x27; , result );</span></span><br><span class="line">    <span class="variable language_">console</span>.<span class="title function_">log</span>( <span class="string">&#x27;id: &#x27;</span> , result.<span class="property">dataValues</span>.<span class="property">id</span> );</span><br><span class="line">    <span class="keyword">return</span> <span class="title class_">User</span>.<span class="title function_">findAll</span>();</span><br><span class="line">&#125;).<span class="title function_">then</span>( <span class="function"><span class="params">rows</span> =&gt;</span> &#123;</span><br><span class="line">    <span class="comment">// console.log( &#x27;rows: &#x27; , rows );</span></span><br><span class="line">    <span class="keyword">return</span> rows.<span class="title function_">map</span>( <span class="function"><span class="params">u</span> =&gt;</span> u.<span class="property">dataValues</span> );</span><br><span class="line">&#125;).<span class="title function_">then</span>( <span class="function"><span class="params">users</span> =&gt;</span> &#123;</span><br><span class="line">    <span class="variable language_">console</span>.<span class="title function_">log</span>( <span class="string">&#x27;users: &#x27;</span> , users );</span><br><span class="line">&#125;).<span class="title function_">catch</span>( <span class="function"><span class="params">error</span> =&gt;</span> &#123;</span><br><span class="line">    <span class="variable language_">console</span>.<span class="title function_">log</span>( <span class="string">&#x27;error: &#x27;</span> , error );</span><br><span class="line">&#125;);</span><br></pre></td></tr></table></figure>



<h3 id="1-4、定义常量"><a href="#1-4、定义常量" class="headerlink" title="1.4、定义常量"></a>1.4、定义常量</h3><p>在 <code>user-back-end</code> 项目目录中创建 <code>constant</code> 目录用来存放 常量。</p>
<p>在 <code>constant</code> 目录下创建 <code>user.js</code> ，其中内容如下:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br></pre></td><td class="code"><pre><span class="line"></span><br><span class="line"><span class="keyword">const</span> constants = &#123;</span><br><span class="line">    <span class="attr">AUTH_SUCCESS</span>: &#123;</span><br><span class="line">        <span class="attr">code</span>: <span class="number">1101</span>,</span><br><span class="line">        <span class="attr">desc</span>: <span class="string">&#x27;认证成功&#x27;</span></span><br><span class="line">    &#125;,</span><br><span class="line">    <span class="attr">AUTH_FAILURE</span>:  &#123;</span><br><span class="line">        <span class="attr">code</span>: <span class="number">1102</span>,</span><br><span class="line">        <span class="attr">desc</span>: <span class="string">&#x27;认证失败&#x27;</span></span><br><span class="line">    &#125;,</span><br><span class="line">    <span class="comment">// Create</span></span><br><span class="line">    <span class="attr">CREATE_SUCCESS</span>: &#123; </span><br><span class="line">        <span class="attr">code</span>: <span class="number">2101</span> , </span><br><span class="line">        <span class="attr">desc</span>: <span class="string">&#x27;创建成功&#x27;</span> </span><br><span class="line">    &#125; ,</span><br><span class="line">    <span class="attr">CREATE_FAILURE</span>: &#123; </span><br><span class="line">        <span class="attr">code</span>: <span class="number">2102</span> , </span><br><span class="line">        <span class="attr">desc</span>: <span class="string">&#x27;创建失败&#x27;</span> </span><br><span class="line">    &#125; ,</span><br><span class="line">    <span class="comment">// Retrieve</span></span><br><span class="line">    <span class="attr">RETRIEVE_SUCCESS</span>: &#123; </span><br><span class="line">        <span class="attr">code</span>: <span class="number">2201</span> , </span><br><span class="line">        <span class="attr">desc</span>: <span class="string">&#x27;查询成功&#x27;</span> </span><br><span class="line">    &#125; ,</span><br><span class="line">    <span class="attr">RETRIEVE_FAILURE</span>: &#123; </span><br><span class="line">        <span class="attr">code</span>: <span class="number">2202</span> , </span><br><span class="line">        <span class="attr">desc</span>: <span class="string">&#x27;查询失败&#x27;</span> </span><br><span class="line">    &#125; ,</span><br><span class="line">    <span class="attr">RETRIEVE_ID_NOT_EXISTS</span>: &#123; </span><br><span class="line">        <span class="attr">code</span>: <span class="number">2203</span> , </span><br><span class="line">        <span class="attr">desc</span>: <span class="string">&#x27;ID在系统中不存在&#x27;</span> </span><br><span class="line">    &#125; ,</span><br><span class="line">    <span class="attr">RETRIEVE_ACCOUNT_EXISTS</span>: &#123; </span><br><span class="line">        <span class="attr">code</span>: <span class="number">2204</span> , </span><br><span class="line">        <span class="attr">desc</span>: <span class="string">&#x27;账号在系统中已存在&#x27;</span> </span><br><span class="line">    &#125; ,</span><br><span class="line">    <span class="attr">RETRIEVE_EMAIL_EXISTS</span>: &#123; </span><br><span class="line">        <span class="attr">code</span>: <span class="number">2205</span> , </span><br><span class="line">        <span class="attr">desc</span>: <span class="string">&#x27;邮箱在系统中已存在&#x27;</span> </span><br><span class="line">    &#125; ,</span><br><span class="line">    <span class="attr">RETRIEVE_TEL_EXISTS</span>: &#123; </span><br><span class="line">        <span class="attr">code</span>: <span class="number">2206</span> , </span><br><span class="line">        <span class="attr">desc</span>: <span class="string">&#x27;手机号在系统中已存在&#x27;</span> </span><br><span class="line">    &#125; ,</span><br><span class="line">    <span class="comment">// Update</span></span><br><span class="line">    <span class="attr">UPDATE_SUCCESS</span>:  &#123; </span><br><span class="line">        <span class="attr">code</span>: <span class="number">2301</span> , </span><br><span class="line">        <span class="attr">desc</span>: <span class="string">&#x27;更新成功&#x27;</span> </span><br><span class="line">    &#125; ,</span><br><span class="line">    <span class="attr">UPDATE_FAILURE</span>: &#123; </span><br><span class="line">        <span class="attr">code</span>: <span class="number">2302</span> , </span><br><span class="line">        <span class="attr">desc</span>: <span class="string">&#x27;更新失败&#x27;</span> </span><br><span class="line">    &#125; ,</span><br><span class="line">    <span class="comment">// Delete</span></span><br><span class="line">    <span class="attr">DELETE_SUCCESS</span>:  &#123; </span><br><span class="line">        <span class="attr">code</span>: <span class="number">2401</span> , </span><br><span class="line">        <span class="attr">desc</span>: <span class="string">&#x27;删除成功&#x27;</span> </span><br><span class="line">    &#125; ,</span><br><span class="line">    <span class="attr">DELETE_FAILURE</span>: &#123; </span><br><span class="line">        <span class="attr">code</span>: <span class="number">2402</span> , </span><br><span class="line">        <span class="attr">desc</span>: <span class="string">&#x27;删除失败&#x27;</span> </span><br><span class="line">    &#125; ,</span><br><span class="line">    <span class="comment">// Validate</span></span><br><span class="line">    <span class="attr">VALIDATE_FAILURE</span>: &#123; </span><br><span class="line">        <span class="attr">code</span>: <span class="number">2501</span> , </span><br><span class="line">        <span class="attr">desc</span>: <span class="string">&#x27;验证失败&#x27;</span> </span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="comment">// 冻结 constants 对象</span></span><br><span class="line"><span class="title class_">Object</span>.<span class="title function_">freeze</span>( constants );</span><br><span class="line"></span><br><span class="line"><span class="keyword">const</span> names = <span class="title class_">Object</span>.<span class="title function_">getOwnPropertyNames</span>( constants );</span><br><span class="line"></span><br><span class="line">names.<span class="title function_">forEach</span>( <span class="function"><span class="params">name</span> =&gt;</span> &#123;</span><br><span class="line">    <span class="keyword">let</span> x = constants[ name ];</span><br><span class="line">    <span class="title class_">Object</span>.<span class="title function_">freeze</span>( x );</span><br><span class="line">&#125;);</span><br><span class="line"></span><br><span class="line"><span class="variable language_">module</span>.<span class="property">exports</span> = constants ;</span><br></pre></td></tr></table></figure>





<h3 id="1-5、Controller"><a href="#1-5、Controller" class="headerlink" title="1.5、Controller"></a>1.5、Controller</h3><p>在 <code>user-back-end</code> 项目目录中创建 <code>controller</code> 目录用来存放 控制器 ( Controller )。</p>
<p>在 <code>controller</code> 目录中创建 <code>user.js</code> 用来处理与用户相关的操作。</p>
<p>首先在 <code>controller/user.js</code> 中导入 <code>User</code> 模型、<code>JWT</code>配置、<code>stringHelper</code>等模块</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// 导入User模型</span></span><br><span class="line"><span class="keyword">const</span> <span class="title class_">User</span> = <span class="built_in">require</span>(<span class="string">&#x27;../models/user&#x27;</span>);</span><br><span class="line"><span class="keyword">const</span> tokenConfig = <span class="built_in">require</span>(<span class="string">&#x27;../config/token&#x27;</span>);</span><br><span class="line"><span class="keyword">const</span> stringHelper = <span class="built_in">require</span>(<span class="string">&#x27;../utils/string.helper&#x27;</span>);</span><br></pre></td></tr></table></figure>

<p>其次在  <code>controller/user.js</code> 中导入 相关常量:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// 解构赋值</span></span><br><span class="line"><span class="keyword">const</span> &#123;</span><br><span class="line">    <span class="variable constant_">AUTH_SUCCESS</span>,</span><br><span class="line">    <span class="variable constant_">AUTH_FAILURE</span>,</span><br><span class="line">    <span class="variable constant_">CREATE_SUCCESS</span>,</span><br><span class="line">    <span class="variable constant_">CREATE_FAILURE</span>,</span><br><span class="line">    <span class="variable constant_">RETRIEVE_SUCCESS</span>,</span><br><span class="line">    <span class="variable constant_">RETRIEVE_FAILURE</span>,</span><br><span class="line">    <span class="variable constant_">RETRIEVE_ID_NOT_EXISTS</span>,</span><br><span class="line">    <span class="variable constant_">RETRIEVE_ACCOUNT_EXISTS</span>,</span><br><span class="line">    <span class="variable constant_">RETRIEVE_EMAIL_EXISTS</span>,</span><br><span class="line">    <span class="variable constant_">RETRIEVE_TEL_EXISTS</span>,</span><br><span class="line">    <span class="variable constant_">UPDATE_SUCCESS</span>,</span><br><span class="line">    <span class="variable constant_">UPDATE_FAILURE</span>,</span><br><span class="line">    <span class="variable constant_">DELETE_SUCCESS</span>,</span><br><span class="line">    <span class="variable constant_">DELETE_FAILURE</span></span><br><span class="line">&#125; = <span class="built_in">require</span>(<span class="string">&#x27;../constant/user&#x27;</span>);</span><br></pre></td></tr></table></figure>

<p>随后即可在其中定义用来完成用户相关操作的方法，比如 查询并返回用户列表的 list 方法:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">const</span> <span class="title function_">list</span> = (<span class="params">req,resp</span>) =&gt; &#123;</span><br><span class="line"></span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<p>最后将在控制器中定义的方法导出:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line"><span class="variable language_">module</span>.<span class="property">exports</span> = &#123;</span><br><span class="line">    list,</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<p>将来在 后端路由 中即可通过导入 <code>controller/user.js</code> 来使用其中的方法。</p>
<h4 id="1-5-1、用户登录"><a href="#1-5-1、用户登录" class="headerlink" title="1.5.1、用户登录"></a>1.5.1、用户登录</h4><p>在  <code>controller/user.js</code> 中定义一个对象用来区分登录类型:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">const</span> map = &#123;</span><br><span class="line">    <span class="string">&#x27;account&#x27;</span> : <span class="string">&#x27;账号&#x27;</span>,</span><br><span class="line">    <span class="string">&#x27;email&#x27;</span> : <span class="string">&#x27;邮箱&#x27;</span>,</span><br><span class="line">    <span class="string">&#x27;tel&#x27;</span> : <span class="string">&#x27;手机号&#x27;</span>,</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<p>在  <code>controller/user.js</code> 中定义 <code>signIn</code> 方法用于实现”登录”操作(实际是向客户端颁发认证信息)。</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">const</span> <span class="title function_">signIn</span> = (<span class="params">req,resp</span>)=&gt;&#123;</span><br><span class="line">    <span class="keyword">const</span> &#123; account , email , tel , password &#125; = req.<span class="property">body</span> ;</span><br><span class="line">    <span class="variable language_">console</span>.<span class="title function_">log</span>( account , email , tel , password );</span><br><span class="line">    <span class="keyword">let</span> fieldName = account ? <span class="string">&#x27;account&#x27;</span> : <span class="string">&#x27;&#x27;</span> ;</span><br><span class="line">    fieldName = email ? <span class="string">&#x27;email&#x27;</span> : fieldName ;</span><br><span class="line">    fieldName = tel ? <span class="string">&#x27;tel&#x27;</span> : fieldName ;</span><br><span class="line">    <span class="variable language_">console</span>.<span class="title function_">log</span>( <span class="string">&#x27;fieldName: &#x27;</span> , fieldName );</span><br><span class="line"></span><br><span class="line">    <span class="comment">// 根据确定下来的 fieldName 从 body 中获取参数值</span></span><br><span class="line">    <span class="keyword">let</span> fieldValue = req.<span class="property">body</span>[ fieldName ];</span><br><span class="line"></span><br><span class="line">    <span class="title class_">User</span>.<span class="title function_">findOne</span>(&#123;</span><br><span class="line">        <span class="attr">where</span>: &#123;</span><br><span class="line">            <span class="comment">// 通过 [ fieldName ] 来确定 名称</span></span><br><span class="line">            [fieldName]: fieldValue</span><br><span class="line">        &#125;</span><br><span class="line">    &#125;).<span class="title function_">then</span>( <span class="function"><span class="params">result</span> =&gt;</span> &#123;</span><br><span class="line">        <span class="variable language_">console</span>.<span class="title function_">log</span>( <span class="string">&#x27;result: &#x27;</span> ,result );</span><br><span class="line">        <span class="comment">// 若登录时使用的登录信息错误，则抛出异常终止后续操作</span></span><br><span class="line">        <span class="keyword">if</span>( !result ) &#123;</span><br><span class="line">            <span class="keyword">throw</span> <span class="keyword">new</span> <span class="title class_">Error</span>( <span class="string">`<span class="subst">$&#123;map[fieldName]&#125;</span>在系统中不存在`</span> );</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="comment">// 若登录信息正确则能够从数据库中查询到用户信息</span></span><br><span class="line">        <span class="comment">// 从 result 中获取 dataValues 作为 user 来使用</span></span><br><span class="line">        <span class="keyword">let</span> user = result.<span class="property">dataValues</span> ;</span><br><span class="line">        <span class="comment">// 直接返回 user 对象</span></span><br><span class="line">        <span class="keyword">return</span> user ;</span><br><span class="line">    &#125;).<span class="title function_">then</span>( <span class="function"><span class="params">user</span> =&gt;</span> &#123;</span><br><span class="line">        <span class="comment">// 根据从数据库中查询到的盐值对用户输入的密码进行加密</span></span><br><span class="line">        <span class="keyword">let</span> encryped = stringHelper.<span class="title function_">encrypt</span>( password , user.<span class="property">salt</span> );</span><br><span class="line">        <span class="comment">// 检查密码是否正确</span></span><br><span class="line">        <span class="comment">// 用数据库中存储的 加密字符串 与 encryped 进行对比</span></span><br><span class="line">        <span class="keyword">if</span>( user.<span class="property">password</span> != encryped ) &#123;</span><br><span class="line">            <span class="keyword">throw</span> <span class="keyword">new</span> <span class="title class_">Error</span>( <span class="string">&#x27;登录密码错误&#x27;</span> );</span><br><span class="line">        &#125;</span><br><span class="line"></span><br><span class="line">        <span class="keyword">let</span> payload = &#123;</span><br><span class="line">            <span class="attr">id</span>: user.<span class="property">id</span></span><br><span class="line">        &#125;</span><br><span class="line"></span><br><span class="line">        <span class="keyword">let</span> options = &#123;</span><br><span class="line">            <span class="attr">expiresIn</span>: tokenConfig.<span class="property">expiresIn</span> , </span><br><span class="line">            <span class="attr">algorithm</span>: tokenConfig.<span class="property">algorithm</span></span><br><span class="line">        &#125;</span><br><span class="line"></span><br><span class="line">        <span class="keyword">let</span> token = jsonwebtoken.<span class="title function_">sign</span>( payload, tokenConfig.<span class="property">secret</span>, options );</span><br><span class="line">        <span class="comment">// 向客户端返回认证信息</span></span><br><span class="line">        resp.<span class="title function_">json</span>( &#123; <span class="attr">code</span>: <span class="number">1021</span> , <span class="attr">result</span>: &#123; token &#125; &#125; );</span><br><span class="line">    &#125;).<span class="title function_">catch</span>( <span class="function"><span class="params">cause</span> =&gt;</span> &#123;</span><br><span class="line">        <span class="keyword">let</span> reason = <span class="string">&#x27;&#x27;</span>;</span><br><span class="line">        <span class="variable language_">console</span>.<span class="title function_">log</span>( cause );</span><br><span class="line">        <span class="keyword">if</span>( cause <span class="keyword">instanceof</span> <span class="title class_">Error</span> ) &#123;</span><br><span class="line">            reason = cause.<span class="property">message</span> ;</span><br><span class="line">        &#125;</span><br><span class="line">        resp.<span class="title function_">json</span>( &#123; <span class="attr">code</span>: <span class="number">1022</span> , <span class="attr">reason</span>: reason &#125; );</span><br><span class="line">    &#125;);</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<p>最后将在控制器中定义的方法导出:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="variable language_">module</span>.<span class="property">exports</span> = &#123;</span><br><span class="line">    ...</span><br><span class="line">    signIn,</span><br><span class="line">    ...</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>



<h4 id="1-5-2、检查认证"><a href="#1-5-2、检查认证" class="headerlink" title="1.5.2、检查认证"></a>1.5.2、检查认证</h4><p>在  <code>controller/user.js</code> 中定义 <code>check</code> 方法用于检查认证:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// 检查认证</span></span><br><span class="line"><span class="keyword">const</span> <span class="title function_">check</span> = (<span class="params">req,resp,next</span>) =&gt; &#123;</span><br><span class="line">    <span class="comment">// 因为经过 jwtMiddleware 处理后的 payload 会绑定到 req 的 auth 属性</span></span><br><span class="line">    <span class="comment">// 因此可以通过检查 req 对象上是否存在有效的 auth 来确定用户是否被认证(即用户是否已经登录)</span></span><br><span class="line">    <span class="keyword">if</span>( req.<span class="property">auth</span> ) &#123;</span><br><span class="line">        <span class="comment">// 若认证有效则继续调用下一个中间件</span></span><br><span class="line">        <span class="title function_">next</span>();</span><br><span class="line">        <span class="keyword">return</span>;</span><br><span class="line">    &#125;</span><br><span class="line">    <span class="comment">// 若未通过认证，则向客户端返回失败信息</span></span><br><span class="line">    resp.<span class="title function_">json</span>( <span class="variable constant_">AUTH_FAILURE</span> );</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<p>注意，这里仅仅检查了 <code>req</code> 中是否存在 <code>auth</code> 而没有检查 <code>auth</code> 中的数据。</p>
<p>最后将在控制器中定义的方法导出:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="variable language_">module</span>.<span class="property">exports</span> = &#123;</span><br><span class="line">    ...</span><br><span class="line">    check,</span><br><span class="line">    ...</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>





<h4 id="1-5-3、用户列表"><a href="#1-5-3、用户列表" class="headerlink" title="1.5.3、用户列表"></a>1.5.3、用户列表</h4><p>在  <code>controller/user.js</code> 中定义 <code>list</code> 方法用于查询数据库中所有的用户并向前端返回用户列表。</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// 用户列表</span></span><br><span class="line"><span class="keyword">const</span> <span class="title function_">list</span> = (<span class="params">req,resp</span>) =&gt; &#123;</span><br><span class="line">    <span class="comment">// 经 jwtMiddleware 解析 请求头 中的 authorization 后，</span></span><br><span class="line">    <span class="comment">// 将数据绑定到 req 的 auth 属性</span></span><br><span class="line">    <span class="title class_">User</span>.<span class="title function_">findAll</span>(&#123;</span><br><span class="line">        <span class="attr">attributes</span>:[<span class="string">&#x27;id&#x27;</span>,<span class="string">&#x27;account&#x27;</span>,<span class="string">&#x27;email&#x27;</span>,<span class="string">&#x27;tel&#x27;</span>],</span><br><span class="line">        <span class="attr">order</span>: [ [<span class="string">&#x27;id&#x27;</span>, <span class="string">&#x27;DESC&#x27;</span>] , [<span class="string">&#x27;account&#x27;</span>, <span class="string">&#x27;DESC&#x27;</span>] ]</span><br><span class="line">    &#125;).<span class="title function_">then</span>( <span class="function"><span class="params">rows</span> =&gt;</span> &#123;</span><br><span class="line">        <span class="keyword">return</span> rows.<span class="title function_">map</span>( <span class="function"><span class="params">u</span> =&gt;</span> u.<span class="property">dataValues</span> );</span><br><span class="line">    &#125;).<span class="title function_">then</span>( <span class="function"><span class="params">users</span> =&gt;</span> &#123;</span><br><span class="line">        <span class="keyword">let</span> index = users.<span class="title function_">findIndex</span>( <span class="function"><span class="params">u</span> =&gt;</span> u.<span class="property">id</span> == req.<span class="property">auth</span>.<span class="property">id</span> );</span><br><span class="line">        users.<span class="title function_">splice</span>( index , <span class="number">1</span> );</span><br><span class="line">        <span class="comment">// 将 RETRIEVE_SUCCESS 展开到新的对象中</span></span><br><span class="line">        resp.<span class="title function_">json</span>( &#123; ...<span class="variable constant_">RETRIEVE_SUCCESS</span> , <span class="attr">result</span>: users &#125; );</span><br><span class="line">    &#125;).<span class="title function_">catch</span>( <span class="function"><span class="params">reason</span> =&gt;</span> &#123;</span><br><span class="line">        <span class="comment">// 将 RETRIEVE_FAILURE 展开到新的对象中</span></span><br><span class="line">        resp.<span class="title function_">json</span>( &#123; ...<span class="variable constant_">RETRIEVE_FAILURE</span> , <span class="attr">reason</span>: reason &#125; );</span><br><span class="line">    &#125;);</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<p>最后将在控制器中定义的方法导出:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="variable language_">module</span>.<span class="property">exports</span> = &#123;</span><br><span class="line">    ...</span><br><span class="line">    list,</span><br><span class="line">    ...</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>





<h4 id="1-5-4、新增用户"><a href="#1-5-4、新增用户" class="headerlink" title="1.5.4、新增用户"></a>1.5.4、新增用户</h4><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// 新增用户</span></span><br><span class="line"><span class="keyword">const</span> <span class="title function_">add</span> = (<span class="params">req,resp</span>)=&gt;&#123;</span><br><span class="line">    <span class="keyword">let</span> &#123; account , email , tel , password &#125; = req.<span class="property">body</span> ;</span><br><span class="line">    <span class="variable language_">console</span>.<span class="title function_">log</span>( account , email , tel , password );</span><br><span class="line">    </span><br><span class="line">    <span class="comment">// 生成用于对密码进行加密的盐值(参数4表示盐值字符串长度)</span></span><br><span class="line">    <span class="keyword">const</span> salt = stringHelper.<span class="title function_">random</span>(<span class="number">4</span>);</span><br><span class="line"></span><br><span class="line">    <span class="comment">// 采用随机生成的盐值对密码进行混淆后再加密</span></span><br><span class="line">    password = stringHelper.<span class="title function_">encrypt</span>( password , salt );</span><br><span class="line"></span><br><span class="line">    <span class="keyword">const</span> user = &#123;</span><br><span class="line">        <span class="attr">account</span>: account ? account : <span class="literal">undefined</span> ,</span><br><span class="line">        <span class="attr">email</span>: email ? email : <span class="literal">undefined</span>,</span><br><span class="line">        <span class="attr">tel</span>: tel ? tel : <span class="literal">undefined</span>,</span><br><span class="line">        password,</span><br><span class="line">        salt</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="title class_">User</span>.<span class="title function_">create</span>( user ).<span class="title function_">then</span>( <span class="function"><span class="params">instance</span> =&gt;</span> &#123;</span><br><span class="line">        <span class="keyword">let</span> id = instance.<span class="property">dataValues</span>.<span class="property">id</span> ;</span><br><span class="line">        <span class="variable language_">console</span>.<span class="title function_">log</span>( <span class="string">&#x27;inserted id : &#x27;</span> , id );</span><br><span class="line">        resp.<span class="title function_">json</span>( &#123; ...<span class="variable constant_">CREATE_SUCCESS</span> , <span class="attr">result</span>: id &#125;);</span><br><span class="line">    &#125;).<span class="title function_">catch</span>( <span class="function"><span class="params">cause</span> =&gt;</span> &#123;</span><br><span class="line">        <span class="keyword">let</span> reason = ( cause <span class="keyword">instanceof</span> <span class="title class_">Error</span> ) ? cause.<span class="property">message</span> : cause ;</span><br><span class="line">        resp.<span class="title function_">json</span>( &#123; ...<span class="variable constant_">CREATE_FAILURE</span> , reason &#125;);</span><br><span class="line">    &#125;);</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<p>最后将在控制器中定义的方法导出:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="variable language_">module</span>.<span class="property">exports</span> = &#123;</span><br><span class="line">    ...</span><br><span class="line">    add,</span><br><span class="line">    ...</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>





<h4 id="1-5-5、查询用户"><a href="#1-5-5、查询用户" class="headerlink" title="1.5.5、查询用户"></a>1.5.5、查询用户</h4><h5 id="1-、load"><a href="#1-、load" class="headerlink" title="(1)、load"></a>(1)、load</h5><p>从路由路径中获取参数值并据此查询数据库:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// 查询用户(单个)</span></span><br><span class="line"><span class="keyword">const</span> <span class="title function_">load</span> = (<span class="params">req,resp</span>) =&gt; &#123;</span><br><span class="line">    <span class="comment">// 根据路由路径中传递的参数值来查询</span></span><br><span class="line">    <span class="keyword">let</span> promise = <span class="title class_">User</span>.<span class="title function_">findByPk</span>( req.<span class="property">params</span>.<span class="property">id</span> );</span><br><span class="line">    promise.<span class="title function_">then</span>( <span class="function"><span class="params">result</span> =&gt;</span> &#123;</span><br><span class="line">        <span class="keyword">if</span>( result )&#123;</span><br><span class="line">            <span class="keyword">return</span> result.<span class="property">dataValues</span> ;</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="keyword">throw</span> <span class="keyword">new</span> <span class="title class_">Error</span>(<span class="string">`<span class="subst">$&#123;id&#125;</span>在系统中不存在`</span>);</span><br><span class="line">    &#125;).<span class="title function_">then</span>( <span class="function"><span class="params">user</span> =&gt;</span> &#123;</span><br><span class="line">        <span class="keyword">delete</span> user.<span class="property">salt</span>;</span><br><span class="line">        <span class="keyword">delete</span> user.<span class="property">password</span>;</span><br><span class="line">        resp.<span class="title function_">json</span>( &#123; ...<span class="variable constant_">RETRIEVE_SUCCESS</span>, <span class="attr">result</span>: user &#125; );</span><br><span class="line">    &#125;).<span class="title function_">catch</span>( <span class="function"><span class="params">cause</span> =&gt;</span> &#123;</span><br><span class="line">        <span class="keyword">let</span> reason = cause.<span class="property">message</span> ? cause.<span class="property">message</span> : cause ;</span><br><span class="line">        resp.<span class="title function_">json</span>( &#123; ...<span class="variable constant_">RETRIEVE_FAILURE</span>, reason &#125; );</span><br><span class="line">    &#125;);</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<p>最后将在控制器中定义的方法导出:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="variable language_">module</span>.<span class="property">exports</span> = &#123;</span><br><span class="line">    ...</span><br><span class="line">    load,</span><br><span class="line">    ...</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>



<h5 id="2-、find"><a href="#2-、find" class="headerlink" title="(2)、find"></a>(2)、find</h5><p>由 <code>jwtMiddleware</code> 从 请求头 <code>authorization</code> 中解析出来的数据查询数据库:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">const</span> <span class="title function_">find</span> = (<span class="params">req,resp</span>) =&gt; &#123;</span><br><span class="line">    <span class="keyword">let</span> promise = <span class="title class_">User</span>.<span class="title function_">findByPk</span>( req.<span class="property">auth</span>.<span class="property">id</span> );</span><br><span class="line">    promise.<span class="title function_">then</span>( <span class="function"><span class="params">result</span> =&gt;</span> &#123;</span><br><span class="line">        <span class="keyword">if</span>( result )&#123;</span><br><span class="line">            <span class="keyword">return</span> result.<span class="property">dataValues</span> ;</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="keyword">throw</span> <span class="keyword">new</span> <span class="title class_">Error</span>(<span class="string">`<span class="subst">$&#123;id&#125;</span>在系统中不存在`</span>);</span><br><span class="line">    &#125;).<span class="title function_">then</span>( <span class="function"><span class="params">user</span> =&gt;</span> &#123;</span><br><span class="line">        <span class="keyword">delete</span> user.<span class="property">salt</span>;</span><br><span class="line">        <span class="keyword">delete</span> user.<span class="property">password</span>;</span><br><span class="line">        resp.<span class="title function_">json</span>( &#123; ...<span class="variable constant_">RETRIEVE_SUCCESS</span>, <span class="attr">result</span>: user &#125; );</span><br><span class="line">    &#125;).<span class="title function_">catch</span>( <span class="function"><span class="params">cause</span> =&gt;</span> &#123;</span><br><span class="line">        <span class="keyword">let</span> reason = cause.<span class="property">message</span> ? cause.<span class="property">message</span> : cause ;</span><br><span class="line">        resp.<span class="title function_">json</span>( &#123; ...<span class="variable constant_">RETRIEVE_FAILURE</span>, reason &#125; );</span><br><span class="line">    &#125;);</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<p>最后将在控制器中定义的方法导出:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="variable language_">module</span>.<span class="property">exports</span> = &#123;</span><br><span class="line">    ...</span><br><span class="line">    find,</span><br><span class="line">    ...</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>



<h4 id="1-5-6、注册校验"><a href="#1-5-6、注册校验" class="headerlink" title="1.5.6、注册校验"></a>1.5.6、注册校验</h4><p>在  <code>controller/user.js</code> 中定义 <code>validator</code> 方法用于对注册信息进行校验:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// 注册校验</span></span><br><span class="line"><span class="keyword">const</span> <span class="title function_">validator</span> = (<span class="params">req,resp,next</span>) =&gt; &#123;</span><br><span class="line">    <span class="keyword">const</span> &#123; account , email , tel , password &#125; = req.<span class="property">body</span> ;</span><br><span class="line">    <span class="keyword">const</span> exists = <span class="literal">true</span> ;</span><br><span class="line">    <span class="title class_">User</span>.<span class="title function_">findOne</span>( &#123; </span><br><span class="line">        <span class="attr">where</span>: &#123; account &#125; </span><br><span class="line">    &#125;).<span class="title function_">then</span>( <span class="function"><span class="params">user</span> =&gt;</span> &#123;</span><br><span class="line">        <span class="keyword">if</span>( user ) &#123;</span><br><span class="line">            resp.<span class="title function_">json</span>( <span class="variable constant_">RETRIEVE_ACCOUNT_EXISTS</span> );</span><br><span class="line">            <span class="keyword">return</span> exists;</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="comment">// 用 findOne 继续查找并将其返回的 Promise实例 继续返回</span></span><br><span class="line">        <span class="keyword">return</span> <span class="title class_">User</span>.<span class="title function_">findOne</span>( &#123; <span class="attr">where</span>: &#123; email &#125; &#125; );</span><br><span class="line">    &#125;).<span class="title function_">then</span>( <span class="function"><span class="params">value</span> =&gt;</span> &#123;</span><br><span class="line">        <span class="keyword">if</span>( value === exists )&#123;</span><br><span class="line">            <span class="keyword">return</span> exists ;</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="keyword">if</span>( value ) &#123;</span><br><span class="line">            resp.<span class="title function_">json</span>( <span class="variable constant_">RETRIEVE_EMAIL_EXISTS</span> );</span><br><span class="line">            <span class="keyword">return</span> exists;</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="comment">// 用 findOne 继续查找并将其返回的 Promise实例 继续返回</span></span><br><span class="line">        <span class="keyword">return</span> <span class="title class_">User</span>.<span class="title function_">findOne</span>( &#123; <span class="attr">where</span>: &#123; tel &#125; &#125; );</span><br><span class="line">    &#125;).<span class="title function_">then</span>( <span class="function"><span class="params">value</span> =&gt;</span> &#123;</span><br><span class="line">        <span class="keyword">if</span>( value === exists )&#123;</span><br><span class="line">            <span class="keyword">return</span> exists ;</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="keyword">if</span>( value ) &#123;</span><br><span class="line">            resp.<span class="title function_">json</span>( <span class="variable constant_">RETRIEVE_TEL_EXISTS</span> );</span><br><span class="line">            <span class="keyword">return</span> exists;</span><br><span class="line">        &#125;</span><br><span class="line">    &#125;).<span class="title function_">then</span>( <span class="function"><span class="params">value</span> =&gt;</span> &#123;</span><br><span class="line">        <span class="keyword">if</span>( value === <span class="literal">undefined</span> ) &#123;</span><br><span class="line">            <span class="comment">// 若 user 不存在则认为可以注册，继续调用下一个中间件即可</span></span><br><span class="line">            <span class="title function_">next</span>();</span><br><span class="line">        &#125;</span><br><span class="line">    &#125;).<span class="title function_">catch</span>( <span class="function"><span class="params">cause</span> =&gt;</span> &#123;</span><br><span class="line">        <span class="keyword">let</span> reason = cause <span class="keyword">instanceof</span> <span class="title class_">Error</span> ? cause.<span class="property">message</span> : cause ;</span><br><span class="line">        resp.<span class="title function_">json</span>( &#123; ...<span class="variable constant_">VALIDATE_FAILURE</span> , reason &#125; );</span><br><span class="line">    &#125;);</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<p>最后将在控制器中定义的方法导出:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="variable language_">module</span>.<span class="property">exports</span> = &#123;</span><br><span class="line">    ...</span><br><span class="line">    validator,</span><br><span class="line">    ...</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>



<h4 id="1-5-7、删除用户"><a href="#1-5-7、删除用户" class="headerlink" title="1.5.7、删除用户"></a>1.5.7、删除用户</h4><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// 删除用户</span></span><br><span class="line"><span class="keyword">const</span> <span class="title function_">remove</span> = (<span class="params">req,resp</span>) =&gt; &#123;</span><br><span class="line">    <span class="title class_">User</span>.<span class="title function_">destroy</span>(&#123;</span><br><span class="line">        <span class="attr">where</span>: &#123;</span><br><span class="line">            <span class="attr">id</span>: req.<span class="property">params</span>.<span class="property">id</span></span><br><span class="line">        &#125;</span><br><span class="line">    &#125;).<span class="title function_">then</span>( <span class="function"><span class="params">count</span> =&gt;</span> &#123;</span><br><span class="line">        resp.<span class="title function_">json</span>( &#123; ...<span class="variable constant_">DELETE_SUCCESS</span> , <span class="attr">result</span>: count &#125; );</span><br><span class="line">    &#125;).<span class="title function_">catch</span>( <span class="function"><span class="params">cause</span> =&gt;</span> &#123;</span><br><span class="line">        <span class="keyword">let</span> reason = ( cause <span class="keyword">instanceof</span> <span class="title class_">Error</span> ) ? cause.<span class="property">message</span> : cause ;</span><br><span class="line">        resp.<span class="title function_">json</span>( &#123; ...<span class="variable constant_">DELETE_FAILURE</span> , reason &#125; );</span><br><span class="line">    &#125;)</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<p>最后将在控制器中定义的方法导出:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="variable language_">module</span>.<span class="property">exports</span> = &#123;</span><br><span class="line">    ...</span><br><span class="line">    remove,</span><br><span class="line">    ...</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>



<h4 id="1-5-8、修改用户"><a href="#1-5-8、修改用户" class="headerlink" title="1.5.8、修改用户"></a>1.5.8、修改用户</h4><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// 修改用户</span></span><br><span class="line"><span class="keyword">const</span> <span class="title function_">update</span> = (<span class="params">req,resp</span>) =&gt; &#123;</span><br><span class="line">  <span class="keyword">let</span> &#123; id , account , email , tel &#125; = req.<span class="property">body</span>;</span><br><span class="line">  <span class="title class_">User</span>.<span class="title function_">update</span>(&#123;</span><br><span class="line">    account,</span><br><span class="line">    email,</span><br><span class="line">    tel</span><br><span class="line">  &#125;,&#123;</span><br><span class="line">    <span class="attr">where</span>: &#123; id &#125;</span><br><span class="line">  &#125;).<span class="title function_">then</span>( <span class="function"><span class="params">result</span> =&gt;</span> &#123;</span><br><span class="line">    resp.<span class="title function_">json</span>( &#123; ...<span class="variable constant_">UPDATE_SUCCESS</span> , result &#125; );</span><br><span class="line">  &#125;).<span class="title function_">catch</span>( <span class="function"><span class="params">cause</span> =&gt;</span> &#123;</span><br><span class="line">    <span class="keyword">let</span> reason = ( cause <span class="keyword">instanceof</span> <span class="title class_">Error</span> ) ? cause.<span class="property">message</span> : cause ;</span><br><span class="line">    resp.<span class="title function_">json</span>( &#123; ...<span class="variable constant_">UPDATE_FAILURE</span> , reason &#125; );</span><br><span class="line">  &#125;);</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<p>最后将在控制器中定义的方法导出:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="variable language_">module</span>.<span class="property">exports</span> = &#123;</span><br><span class="line">    ...</span><br><span class="line">    update,</span><br><span class="line">    ...</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>







<h3 id="1-6、后端接口"><a href="#1-6、后端接口" class="headerlink" title="1.6、后端接口"></a>1.6、后端接口</h3><p>在  <code>user-back-end</code> 项目目录的 <code>routes</code> 目录中定义<strong>后端路由</strong>，这些路由就是将来在前端工程中调用的接口。</p>
<h4 id="1-6-0、预备"><a href="#1-6-0、预备" class="headerlink" title="1.6.0、预备"></a>1.6.0、预备</h4><p>在 <code>routes</code> 目录中定义与用户相关的后端路由，可以在 <code>user.js</code> 中完成:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">const</span> express = <span class="built_in">require</span>(<span class="string">&#x27;express&#x27;</span>);</span><br><span class="line"></span><br><span class="line"><span class="comment">// 导入控制器</span></span><br><span class="line"><span class="keyword">const</span> userController = <span class="built_in">require</span>(<span class="string">&#x27;../controller/user&#x27;</span>);</span><br><span class="line"></span><br><span class="line"><span class="comment">// 创建Router实例</span></span><br><span class="line"><span class="keyword">const</span> router = express.<span class="title class_">Router</span>();</span><br><span class="line"></span><br><span class="line"><span class="comment">// 在这里添加相关路由即可</span></span><br><span class="line"></span><br><span class="line"><span class="comment">// 导出Router实例</span></span><br><span class="line"><span class="variable language_">module</span>.<span class="property">exports</span> = router ;</span><br></pre></td></tr></table></figure>



<h4 id="1-6-1、用户注册"><a href="#1-6-1、用户注册" class="headerlink" title="1.6.1、用户注册"></a>1.6.1、用户注册</h4><p>直接通过 <code>router</code> 对象来定义后端路由:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// 用户注册(先校验数据、校验通过后再添加新用户)</span></span><br><span class="line">router.<span class="title function_">put</span>(<span class="string">&#x27;/user/sign/up&#x27;</span>, userController.<span class="property">validator</span>, userController.<span class="property">add</span> );</span><br></pre></td></tr></table></figure>

<p>请注意，这里使用了两个中间件函数:</p>
<ul>
<li><code>userController.validator</code> 用于对用户注册时使用的 <code>account</code>、<code>email</code>、<code>tel</code> 进行检查</li>
<li><code>userController.add</code> 用于完成添加用户操作(即将数据保存到数据库中)</li>
</ul>
<h4 id="1-6-2、用户登录"><a href="#1-6-2、用户登录" class="headerlink" title="1.6.2、用户登录"></a>1.6.2、用户登录</h4><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// 用户登录</span></span><br><span class="line">router.<span class="title function_">post</span>(<span class="string">&#x27;/user/sign/in&#x27;</span>, userController.<span class="property">signIn</span> );</span><br></pre></td></tr></table></figure>



<h4 id="1-6-3、用户列表"><a href="#1-6-3、用户列表" class="headerlink" title="1.6.3、用户列表"></a>1.6.3、用户列表</h4><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// 获取用户列表</span></span><br><span class="line">router.<span class="title function_">get</span>(<span class="string">&#x27;/user/list&#x27;</span>, userController.<span class="property">check</span>, userController.<span class="property">list</span> );</span><br></pre></td></tr></table></figure>



<h4 id="1-6-4、查询用户"><a href="#1-6-4、查询用户" class="headerlink" title="1.6.4、查询用户"></a>1.6.4、查询用户</h4><h5 id="1-、load-1"><a href="#1-、load-1" class="headerlink" title="(1)、load"></a>(1)、load</h5><p>根据路由路径中的参数值来查询:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// 查询用户</span></span><br><span class="line">router.<span class="title function_">get</span>( <span class="string">&#x27;/user/load/:id&#x27;</span>, userController.<span class="property">check</span>, userController.<span class="property">load</span> );</span><br></pre></td></tr></table></figure>



<h5 id="2-、find-1"><a href="#2-、find-1" class="headerlink" title="(2)、find"></a>(2)、find</h5><p>根据认证信息中的数据来查询:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">router.<span class="title function_">get</span>(<span class="string">&#x27;/user/find&#x27;</span>, userController.<span class="property">check</span>, userController.<span class="property">find</span> );</span><br></pre></td></tr></table></figure>





<h4 id="1-6-5、添加用户"><a href="#1-6-5、添加用户" class="headerlink" title="1.6.5、添加用户"></a>1.6.5、添加用户</h4><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// 添加用户(先检查是否被授权、若已授权则添加新用户)</span></span><br><span class="line">router.<span class="title function_">put</span>(<span class="string">&#x27;/user/add&#x27;</span>, userController.<span class="property">check</span>, userController.<span class="property">add</span>);</span><br></pre></td></tr></table></figure>



<h4 id="1-6-6、修改用户"><a href="#1-6-6、修改用户" class="headerlink" title="1.6.6、修改用户"></a>1.6.6、修改用户</h4><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// 修改用户</span></span><br><span class="line">router.<span class="title function_">post</span>(<span class="string">&#x27;/user/update&#x27;</span>, userController.<span class="property">check</span> , userController.<span class="property">update</span> );</span><br></pre></td></tr></table></figure>



<h4 id="1-6-7、删除用户"><a href="#1-6-7、删除用户" class="headerlink" title="1.6.7、删除用户"></a>1.6.7、删除用户</h4><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// 删除用户</span></span><br><span class="line">router.<span class="title function_">delete</span>(<span class="string">&#x27;/user/remove/:id&#x27;</span>, userController.<span class="property">check</span>, userController.<span class="property">remove</span>);</span><br></pre></td></tr></table></figure>





<h3 id="1-7、测试接口"><a href="#1-7、测试接口" class="headerlink" title="1.7、测试接口"></a>1.7、测试接口</h3><p>使用 <code>PostMan</code> 或 <code>Apifox</code> 等测试工具对于所有的后端接口进行测试。</p>
<p>在测试时需要注意:</p>
<ul>
<li>需要授权的接口一定要携带 <code>authorization</code></li>
<li>一定要根据后端接口的实际需求来传递参数</li>
<li>一定要注意后端接口所返回的数据格式</li>
</ul>
<p>每个后端接口应该对应多个测试用例。</p>
<h2 id="2、前端项目"><a href="#2、前端项目" class="headerlink" title="2、前端项目"></a>2、前端项目</h2><h3 id="2-1、预备项目"><a href="#2-1、预备项目" class="headerlink" title="2.1、预备项目"></a>2.1、预备项目</h3><h4 id="2-1-1、新建项目"><a href="#2-1-1、新建项目" class="headerlink" title="2.1.1、新建项目"></a>2.1.1、新建项目</h4><p>通过 <code>vite</code> 来创建新项目:</p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">npm init vite@latest user-front-end</span><br></pre></td></tr></table></figure>

<p>采用 <code>vite</code> 所创建项目的目录解构，与之前采用 <code>@vue/cli</code> 所创建项目的目录结构是有差异的。</p>
<p>最明显的就是 <code>index.html</code> 文件的存储路径。</p>
<h4 id="2-1-2、调整项目"><a href="#2-1-2、调整项目" class="headerlink" title="2.1.2、调整项目"></a>2.1.2、调整项目</h4><p>删除不必要的文件: <code>.gitignore</code> 、<code>README.md</code> 。</p>
<p>删除不必要的组件: <code>src/components/HelloWorld.vue</code> 。</p>
<p>简化 <code>App.vue</code> 为以下形式:</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line">&lt;script&gt;</span><br><span class="line">&lt;/script&gt;</span><br><span class="line"></span><br><span class="line">&lt;template&gt;</span><br><span class="line">  &lt;img alt=&quot;Vue logo&quot; src=&quot;./assets/logo.png&quot; /&gt;</span><br><span class="line">&lt;/template&gt;</span><br><span class="line"></span><br><span class="line">&lt;style&gt;</span><br><span class="line">&lt;/style&gt;</span><br></pre></td></tr></table></figure>

<p>调整项目后的文件和目录结构如下:</p>
<figure class="highlight cmd"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br></pre></td><td class="code"><pre><span class="line">user-front-end</span><br><span class="line">      |</span><br><span class="line">      |------------- package.json</span><br><span class="line">      |</span><br><span class="line">      |------------- index.html</span><br><span class="line">      |</span><br><span class="line">      |------------- public</span><br><span class="line">      |                 |--------- favicon.ico</span><br><span class="line">      |</span><br><span class="line">      |------------- src</span><br><span class="line">      |                 |--------- main.js</span><br><span class="line">      |                 |--------- App.vue</span><br><span class="line">      |                 |--------- components</span><br><span class="line">      |                 |--------- assets</span><br><span class="line">      |                 |             |--------- logo.png</span><br><span class="line">      |</span><br><span class="line">      |------------- vite.config.js</span><br></pre></td></tr></table></figure>





<h4 id="2-1-3、添加依赖"><a href="#2-1-3、添加依赖" class="headerlink" title="2.1.3、添加依赖"></a>2.1.3、添加依赖</h4><p>在 <code>package.json</code> 的 <code>dependencies</code> 中添加 <code>vue-router</code> 和 <code>element-plus</code> :</p>
<figure class="highlight json"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><span class="attr">&quot;dependencies&quot;</span><span class="punctuation">:</span> <span class="punctuation">&#123;</span></span><br><span class="line">  <span class="attr">&quot;vue&quot;</span><span class="punctuation">:</span> <span class="string">&quot;^3.2.25&quot;</span><span class="punctuation">,</span></span><br><span class="line">  <span class="attr">&quot;vue-router&quot;</span><span class="punctuation">:</span> <span class="string">&quot;^4.0.15&quot;</span><span class="punctuation">,</span></span><br><span class="line">  <span class="attr">&quot;element-plus&quot;</span><span class="punctuation">:</span> <span class="string">&quot;^2.2.0&quot;</span><span class="punctuation">,</span></span><br><span class="line">  <span class="attr">&quot;@element-plus/icons-vue&quot;</span><span class="punctuation">:</span> <span class="string">&quot;^1.1.4&quot;</span></span><br><span class="line"><span class="punctuation">&#125;</span><span class="punctuation">,</span></span><br></pre></td></tr></table></figure>





<h4 id="2-1-5、配置项目"><a href="#2-1-5、配置项目" class="headerlink" title="2.1.5、配置项目"></a>2.1.5、配置项目</h4><p>采用 <code>vite</code> 创建的项目配置文件是 <code>vite.config.js</code> ，因此对项目的配置需要通过 <code>vite.config.js</code> 来实现。</p>
<p>将 <code>vite.config.js</code> 暂修改为以下形式:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">import</span> &#123; defineConfig &#125; <span class="keyword">from</span> <span class="string">&#x27;vite&#x27;</span>;</span><br><span class="line"><span class="keyword">import</span> vue <span class="keyword">from</span> <span class="string">&#x27;@vitejs/plugin-vue&#x27;</span>;</span><br><span class="line"></span><br><span class="line"><span class="comment">// https://vitejs.dev/config/</span></span><br><span class="line"><span class="keyword">export</span> <span class="keyword">default</span> <span class="title function_">defineConfig</span>(&#123;</span><br><span class="line">  <span class="attr">plugins</span>: [<span class="title function_">vue</span>()],</span><br><span class="line">  <span class="attr">resolve</span>: &#123;</span><br><span class="line">    <span class="attr">alias</span>: &#123;</span><br><span class="line">      <span class="string">&#x27;vue&#x27;</span> : <span class="string">&#x27;vue/dist/vue.esm-bundler.js&#x27;</span></span><br><span class="line">    &#125;</span><br><span class="line">  &#125;,</span><br><span class="line">  <span class="comment">// 配置前端项目对应的服务</span></span><br><span class="line">  <span class="attr">server</span>: &#123;</span><br><span class="line">    <span class="comment">// 指定前端项目对应服务的端口</span></span><br><span class="line">    <span class="attr">port</span>: <span class="number">8080</span>,</span><br><span class="line">    <span class="comment">// 指示是否在前端项目的服务启动后自动打开浏览器</span></span><br><span class="line">    <span class="attr">open</span>: <span class="literal">true</span>,</span><br><span class="line">    <span class="comment">// 设置代理(可以存在多个被代理的服务)</span></span><br><span class="line">    <span class="attr">proxy</span>: &#123;</span><br><span class="line">      <span class="comment">// 设置访问某个后端服务时使用的前缀</span></span><br><span class="line">      <span class="string">&#x27;/back&#x27;</span>: &#123;</span><br><span class="line">        <span class="comment">// 设置被代理的目标服务地址</span></span><br><span class="line">        <span class="attr">target</span>: <span class="string">&#x27;http://localhost:3000&#x27;</span>,</span><br><span class="line">        <span class="comment">// 设置是否允许修改源(origin)</span></span><br><span class="line">        <span class="attr">changeOrigin</span>: <span class="literal">true</span>,</span><br><span class="line">        <span class="comment">// 将请求路径中的前缀替换为空串</span></span><br><span class="line">        <span class="title function_">rewrite</span>(<span class="params">path</span>)&#123;</span><br><span class="line">          <span class="variable language_">console</span>.<span class="title function_">log</span>( <span class="string">&#x27;path: &#x27;</span> , path );</span><br><span class="line">          <span class="keyword">let</span> regexp = <span class="regexp">/^\/back/</span> ;</span><br><span class="line">          path = path.<span class="title function_">replace</span>( regexp , <span class="string">&#x27;&#x27;</span> );</span><br><span class="line">          <span class="variable language_">console</span>.<span class="title function_">log</span>( <span class="string">&#x27;path: &#x27;</span> , path );</span><br><span class="line">          <span class="keyword">return</span> path ;</span><br><span class="line">        &#125;</span><br><span class="line">      &#125;,</span><br><span class="line">      <span class="comment">// 设置访问某个后端服务时使用的前缀</span></span><br><span class="line">      <span class="string">&#x27;/etut&#x27;</span>: &#123;</span><br><span class="line">        <span class="attr">target</span>: <span class="string">&#x27;http://www.ecut.edu.cn:80&#x27;</span>,</span><br><span class="line">        <span class="attr">rewrite</span>: <span class="function"><span class="params">path</span> =&gt;</span> path.<span class="title function_">replace</span>( <span class="regexp">/^\/etut/</span> , <span class="string">&#x27;&#x27;</span> )</span><br><span class="line">      &#125;</span><br><span class="line">    &#125;</span><br><span class="line">  &#125;</span><br><span class="line">&#125;);</span><br></pre></td></tr></table></figure>

<p>关于 <code>vite</code> 的配置请查看<a target="_blank" rel="noopener" href="https://vitejs.dev/config/">官方文档</a>。</p>
<h4 id="2-1-5、安装依赖"><a href="#2-1-5、安装依赖" class="headerlink" title="2.1.5、安装依赖"></a>2.1.5、安装依赖</h4><p>首先确保已经进入到 <code>user-front-end</code> 项目目录中，随后执行 <code>npm install</code> 安装依赖即可。</p>
<h4 id="2-1-6、启动项目"><a href="#2-1-6、启动项目" class="headerlink" title="2.1.6、启动项目"></a>2.1.6、启动项目</h4><p>首先确保已经进入到 <code>user-front-end</code> 项目目录中，随后执行 <code>npm run dev</code> 来启动项目。</p>
<h3 id="2-2、基础设施"><a href="#2-2、基础设施" class="headerlink" title="2.2、基础设施"></a>2.2、基础设施</h3><h4 id="2-2-1、Element-Plus"><a href="#2-2-1、Element-Plus" class="headerlink" title="2.2.1、Element Plus"></a>2.2.1、Element Plus</h4><p>我们可以在 <code>src/main.js</code> 中导入 <code>ElementPlus</code> 及其样式并将其启用:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">import</span> &#123; createApp &#125; <span class="keyword">from</span> <span class="string">&#x27;vue&#x27;</span>;</span><br><span class="line"><span class="keyword">import</span> <span class="title class_">ElementPlus</span> <span class="keyword">from</span> <span class="string">&#x27;element-plus&#x27;</span>;</span><br><span class="line"><span class="keyword">import</span> <span class="string">&#x27;element-plus/dist/index.css&#x27;</span> ;</span><br><span class="line"><span class="keyword">import</span> <span class="title class_">App</span> <span class="keyword">from</span> <span class="string">&#x27;./App.vue&#x27;</span>;</span><br><span class="line"><span class="keyword">const</span> app = <span class="title function_">createApp</span>(<span class="title class_">App</span>);</span><br><span class="line">app.<span class="title function_">use</span>( <span class="title class_">ElementPlus</span> );</span><br><span class="line">app.<span class="title function_">mount</span>(<span class="string">&#x27;#app&#x27;</span>);</span><br></pre></td></tr></table></figure>

<p>但是，在 <code>main.js</code> 中直接启用 <code>ElementPlus</code> 所有组件会影响性能。</p>
<p>因此本项目中准备采用根据实际需要来导入 <code>ElementPlus</code> 组件。</p>
<p>故而在  <code>main.js</code> 中仅需导入 <code>ElementPlus</code> 组件样式即可。</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">import</span> &#123; createApp &#125; <span class="keyword">from</span> <span class="string">&#x27;vue&#x27;</span>;</span><br><span class="line"><span class="keyword">import</span> <span class="string">&#x27;element-plus/dist/index.css&#x27;</span> ;</span><br><span class="line"><span class="keyword">import</span> <span class="title class_">App</span> <span class="keyword">from</span> <span class="string">&#x27;./App.vue&#x27;</span>;</span><br><span class="line"><span class="keyword">const</span> app = <span class="title function_">createApp</span>(<span class="title class_">App</span>);</span><br><span class="line">app.<span class="title function_">mount</span>(<span class="string">&#x27;#app&#x27;</span>);</span><br></pre></td></tr></table></figure>



<h4 id="2-2-2、配置前端路由"><a href="#2-2-2、配置前端路由" class="headerlink" title="2.2.2、配置前端路由"></a>2.2.2、配置前端路由</h4><p>在 <code>user-front-end</code> 项目的 <code>src</code> 目录中创建 <code>routes</code> 目录用来存放前端路由文件。</p>
<p>在 <code>src/routes</code> 目录中创建 <code>home.js</code> 用来定义与主页相关的前端路由:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">const</span> routes = [</span><br><span class="line"></span><br><span class="line">];</span><br><span class="line"></span><br><span class="line"><span class="keyword">export</span> <span class="keyword">default</span> routes ;</span><br></pre></td></tr></table></figure>

<p>在 <code>src/routes</code> 目录中创建 <code>user.js</code> 用来定义与用户相关的前端路由:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">const</span> routes = [</span><br><span class="line"></span><br><span class="line">];</span><br><span class="line"></span><br><span class="line"><span class="keyword">export</span> <span class="keyword">default</span> routes ;</span><br></pre></td></tr></table></figure>

<p>在 <code>src/routes</code> 目录中创建 <code>index.js</code> 文件用来创建并配置 <strong>路由器</strong> ( 也称作 分发器 ):</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br></pre></td><td class="code"><pre><span class="line"></span><br><span class="line"><span class="keyword">import</span> &#123; createRouter, createWebHistory &#125; <span class="keyword">from</span> <span class="string">&#x27;vue-router&#x27;</span>;</span><br><span class="line"></span><br><span class="line"><span class="comment">// 导入其它路由记录</span></span><br><span class="line"><span class="keyword">import</span> homeRoutes <span class="keyword">from</span> <span class="string">&#x27;./home&#x27;</span>;</span><br><span class="line"><span class="keyword">import</span> userRoutes <span class="keyword">from</span> <span class="string">&#x27;./user&#x27;</span>;</span><br><span class="line"></span><br><span class="line"><span class="comment">// 设置 RouterOptions</span></span><br><span class="line"><span class="keyword">const</span> options = &#123;</span><br><span class="line">    <span class="attr">history</span>: <span class="title function_">createWebHistory</span>(),</span><br><span class="line">    <span class="attr">routes</span>: [ ...homeRoutes , ...userRoutes ]</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="comment">// 创建 Router实例</span></span><br><span class="line"><span class="keyword">const</span> router = <span class="title function_">createRouter</span>( options );</span><br><span class="line"></span><br><span class="line"><span class="comment">// 全局后置钩子</span></span><br><span class="line">router.<span class="title function_">afterEach</span>( <span class="function"><span class="params">to</span> =&gt;</span> &#123;</span><br><span class="line">    <span class="variable language_">document</span>.<span class="property">title</span> = to.<span class="property">meta</span>.<span class="property">title</span>;</span><br><span class="line">&#125;);</span><br><span class="line"></span><br><span class="line"><span class="comment">// 导出 Router实例</span></span><br><span class="line"><span class="keyword">export</span> <span class="keyword">default</span> router ;</span><br></pre></td></tr></table></figure>







<h3 id="2-3、组件"><a href="#2-3、组件" class="headerlink" title="2.3、组件"></a>2.3、组件</h3><h4 id="2-3-1、根组件"><a href="#2-3-1、根组件" class="headerlink" title="2.3.1、根组件"></a>2.3.1、根组件</h4><p>在 <code>user-front-end</code> 项目默认以 <code>App.vue</code> 为根组件，我们不修改默认配置。</p>
<p>在根组件 <code>App.vue</code> 中导入并注册 <code>ElementPlus</code>组件:</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br></pre></td><td class="code"><pre><span class="line">&lt;script&gt;</span><br><span class="line">import &#123; </span><br><span class="line">  ElContainer,</span><br><span class="line">  ElHeader,</span><br><span class="line">  ElMain,</span><br><span class="line">  ElFooter</span><br><span class="line">&#125; from &#x27;element-plus&#x27;;</span><br><span class="line"></span><br><span class="line">export default &#123;</span><br><span class="line">  name: &#x27;App&#x27;,</span><br><span class="line">  data()&#123;</span><br><span class="line">    return &#123;</span><br><span class="line">      // 用来表示是否已经登录的属性</span><br><span class="line">      loggedIn: false</span><br><span class="line">    &#125;</span><br><span class="line">  &#125;,</span><br><span class="line">  components: &#123;</span><br><span class="line">    ElContainer,</span><br><span class="line">    ElHeader,</span><br><span class="line">    ElMain,</span><br><span class="line">    ElFooter</span><br><span class="line">  &#125;,</span><br><span class="line">  created()&#123;</span><br><span class="line">    console.log( &#x27;[root created] loggedIn&#x27; , this.loggedIn );</span><br><span class="line">  &#125;</span><br><span class="line">&#125;</span><br><span class="line">&lt;/script&gt;</span><br></pre></td></tr></table></figure>

<p>使用 <code>Element Plus</code> 中的组件划分页面布局并定义 命名视图。</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br></pre></td><td class="code"><pre><span class="line">&lt;template&gt;</span><br><span class="line">  &lt;el-container&gt;</span><br><span class="line">    &lt;el-header class=&quot;header&quot;&gt;</span><br><span class="line">      &lt;router-view name=&quot;header&quot;&gt;&lt;/router-view&gt;</span><br><span class="line">    &lt;/el-header&gt;</span><br><span class="line">    &lt;el-main class=&quot;middle&quot;&gt;</span><br><span class="line">      &lt;router-view name=&quot;middle&quot;&gt;&lt;/router-view&gt;</span><br><span class="line">    &lt;/el-main&gt;</span><br><span class="line">    &lt;el-footer class=&quot;footer&quot;&gt;</span><br><span class="line">      &lt;router-view name=&quot;header&quot;&gt;&lt;/router-view&gt;</span><br><span class="line">    &lt;/el-footer&gt;</span><br><span class="line">  &lt;/el-container&gt;</span><br><span class="line">&lt;/template&gt;</span><br></pre></td></tr></table></figure>

<p> 简单设置 根组件中各个区域的样式:</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line">&lt;style&gt;</span><br><span class="line">body &#123; margin: 0; padding: 0 ; &#125;</span><br><span class="line">.header&#123; height: 10vh; &#125;</span><br><span class="line">.middle&#123; height: 80vh; background: #ffd;&#125;</span><br><span class="line">.footer&#123; height: 10vh; &#125;</span><br><span class="line">&lt;/style&gt;</span><br></pre></td></tr></table></figure>



<h4 id="2-3-2、导航组件"><a href="#2-3-2、导航组件" class="headerlink" title="2.3.2、导航组件"></a>2.3.2、导航组件</h4><p>在 <code>src/components</code> 目录中创建 <code>HeaderView.vue</code> 充当导航组件。</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br></pre></td><td class="code"><pre><span class="line">&lt;template&gt;</span><br><span class="line">  &lt;el-row&gt;</span><br><span class="line">    &lt;el-col :span=&quot;6&quot; class=&quot;logo&quot;&gt;</span><br><span class="line">      LOGO</span><br><span class="line">    &lt;/el-col&gt;</span><br><span class="line">    &lt;el-col :span=&quot;18&quot; class=&quot;nav&quot;&gt;</span><br><span class="line">      &lt;el-menu mode=&quot;horizontal&quot; :default-active=&quot;active&quot; :router=&quot;true&quot; :ellipsis=&quot;false&quot;&gt;</span><br><span class="line">        &lt;!-- 若存在多个组件依赖于同一个属性值则可以将它们包裹到一个 template 中 --&gt;</span><br><span class="line">        &lt;template v-if=&quot;$root.loggedIn&quot;&gt;</span><br><span class="line">          &lt;el-menu-item index=&quot;/list&quot;&gt;列表&lt;/el-menu-item&gt;</span><br><span class="line">          &lt;el-menu-item index=&quot;/add&quot;&gt;添加&lt;/el-menu-item&gt;</span><br><span class="line">          &lt;el-menu-item index=&quot;/set&quot;&gt;设置&lt;/el-menu-item&gt;</span><br><span class="line">          &lt;el-menu-item index=&quot;/sign/out&quot;&gt;注销&lt;/el-menu-item&gt;</span><br><span class="line">        &lt;/template&gt;</span><br><span class="line">        &lt;template v-else&gt;</span><br><span class="line">          &lt;el-menu-item index=&quot;/&quot;&gt;首页&lt;/el-menu-item&gt;</span><br><span class="line">          &lt;el-menu-item index=&quot;/sign/up&quot;&gt;注册&lt;/el-menu-item&gt;</span><br><span class="line">          &lt;el-menu-item index=&quot;/sign/in&quot;&gt;登录&lt;/el-menu-item&gt;</span><br><span class="line">        &lt;/template&gt;</span><br><span class="line">      &lt;/el-menu&gt;</span><br><span class="line">    &lt;/el-col&gt;</span><br><span class="line">  &lt;/el-row&gt;</span><br><span class="line">&lt;/template&gt;</span><br><span class="line"></span><br><span class="line">&lt;script&gt;</span><br><span class="line">import &#123;</span><br><span class="line">  ElRow,</span><br><span class="line">  ElCol,</span><br><span class="line">  ElMenu,</span><br><span class="line">  ElMenuItem</span><br><span class="line">&#125; from &#x27;element-plus&#x27;;</span><br><span class="line"></span><br><span class="line">export default &#123;</span><br><span class="line">  name: &#x27;HeaderView&#x27;,</span><br><span class="line">  data()&#123;</span><br><span class="line">    return &#123;</span><br><span class="line">      active: &#x27;&#x27;</span><br><span class="line">    &#125;</span><br><span class="line">  &#125;,</span><br><span class="line">  // 组件内守卫</span><br><span class="line">  beforeRouteEnter (to, from, next) &#123;</span><br><span class="line">    next( vm =&gt; &#123;</span><br><span class="line">      // 通过 `vm` 访问组件实例</span><br><span class="line">      vm.active = to.path;</span><br><span class="line">      console.log( &#x27;vm.active: &#x27;, vm.active );</span><br><span class="line">    &#125;);</span><br><span class="line">  &#125;,</span><br><span class="line">  components: &#123;</span><br><span class="line">    ElRow,</span><br><span class="line">    ElCol,</span><br><span class="line">    ElMenu,</span><br><span class="line">    ElMenuItem</span><br><span class="line">  &#125;,</span><br><span class="line">  created()&#123;</span><br><span class="line">    this.$root.loggedIn = !!sessionStorage.getItem(&#x27;token&#x27;);</span><br><span class="line">    console.log( &#x27;[header created] loggedIn&#x27; , this.$root.loggedIn );</span><br><span class="line">  &#125;,</span><br><span class="line">  updated()&#123;</span><br><span class="line">    this.$root.loggedIn = !!sessionStorage.getItem(&#x27;token&#x27;);</span><br><span class="line">    console.log( &#x27;[header updated] loggedIn&#x27; , this.$root.loggedIn );</span><br><span class="line">  &#125;</span><br><span class="line">&#125;</span><br><span class="line">&lt;/script&gt;</span><br><span class="line"></span><br><span class="line">&lt;style&gt;</span><br><span class="line">.logo &#123;</span><br><span class="line">  font-size: 3rem;</span><br><span class="line">  line-height: 10vh;</span><br><span class="line">&#125;</span><br><span class="line">.nav &#123;</span><br><span class="line">  text-align: right;</span><br><span class="line">&#125;</span><br><span class="line">.nav&gt;* &#123;</span><br><span class="line">  /* 让元素成为内联的Flex容器 */</span><br><span class="line">  display: inline-flex;</span><br><span class="line">  height: 10vh;</span><br><span class="line">&#125;</span><br><span class="line">&lt;/style&gt;</span><br></pre></td></tr></table></figure>

<p>注意 <code>HeaderView.vue</code> 除了充当顶部导航组件外，还要维护用户的登录状态。</p>
<p>(通过修改根组件的<code>loggedIn</code>属性来实现)</p>
<h4 id="2-3-3、版权组件"><a href="#2-3-3、版权组件" class="headerlink" title="2.3.3、版权组件"></a>2.3.3、版权组件</h4><p>在 <code>src/components</code> 目录中创建 <code>FooterView.vue</code> 充当用于显示版权信息的组件。</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br></pre></td><td class="code"><pre><span class="line">&lt;template&gt;</span><br><span class="line">  &lt;div class=&quot;copyright&quot;&gt;</span><br><span class="line">    &lt;p&gt;&amp;copy;2022 某某 版权所有&lt;/p&gt;</span><br><span class="line">  &lt;/div&gt;</span><br><span class="line">&lt;/template&gt;</span><br><span class="line"></span><br><span class="line">&lt;script&gt;</span><br><span class="line">export default &#123;</span><br><span class="line">  name: &#x27;FooterView&#x27;</span><br><span class="line">&#125;</span><br><span class="line">&lt;/script&gt;</span><br><span class="line"></span><br><span class="line">&lt;style&gt;</span><br><span class="line">.copyright &#123;</span><br><span class="line">  text-align: center;</span><br><span class="line">&#125;</span><br><span class="line">&lt;/style&gt;</span><br></pre></td></tr></table></figure>





<h4 id="2-3-4、登录组件"><a href="#2-3-4、登录组件" class="headerlink" title="2.3.4、登录组件"></a>2.3.4、登录组件</h4><p>在 <code>src/components</code> 目录中创建 <code>SignInView.vue</code> 充当用于用户登录组件。</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span 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class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br><span class="line">82</span><br><span class="line">83</span><br><span class="line">84</span><br><span class="line">85</span><br><span class="line">86</span><br><span class="line">87</span><br><span class="line">88</span><br><span class="line">89</span><br><span class="line">90</span><br><span class="line">91</span><br><span class="line">92</span><br><span class="line">93</span><br><span class="line">94</span><br><span class="line">95</span><br><span class="line">96</span><br><span class="line">97</span><br><span class="line">98</span><br><span class="line">99</span><br><span class="line">100</span><br><span class="line">101</span><br><span class="line">102</span><br><span class="line">103</span><br><span class="line">104</span><br><span class="line">105</span><br><span class="line">106</span><br><span class="line">107</span><br><span class="line">108</span><br><span class="line">109</span><br><span class="line">110</span><br><span class="line">111</span><br><span class="line">112</span><br><span class="line">113</span><br><span class="line">114</span><br><span class="line">115</span><br><span class="line">116</span><br><span class="line">117</span><br><span class="line">118</span><br><span class="line">119</span><br><span class="line">120</span><br><span class="line">121</span><br><span class="line">122</span><br><span class="line">123</span><br><span class="line">124</span><br><span class="line">125</span><br><span class="line">126</span><br><span class="line">127</span><br><span class="line">128</span><br><span class="line">129</span><br><span class="line">130</span><br><span class="line">131</span><br><span class="line">132</span><br><span class="line">133</span><br><span class="line">134</span><br><span class="line">135</span><br><span class="line">136</span><br><span class="line">137</span><br><span class="line">138</span><br><span class="line">139</span><br><span class="line">140</span><br><span class="line">141</span><br><span class="line">142</span><br><span class="line">143</span><br><span class="line">144</span><br><span class="line">145</span><br><span class="line">146</span><br><span class="line">147</span><br><span class="line">148</span><br><span class="line">149</span><br><span class="line">150</span><br><span class="line">151</span><br><span class="line">152</span><br><span class="line">153</span><br><span class="line">154</span><br><span class="line">155</span><br><span class="line">156</span><br><span class="line">157</span><br><span class="line">158</span><br><span class="line">159</span><br><span class="line">160</span><br><span class="line">161</span><br><span class="line">162</span><br><span class="line">163</span><br><span class="line">164</span><br><span class="line">165</span><br><span class="line">166</span><br><span class="line">167</span><br><span class="line">168</span><br><span class="line">169</span><br><span class="line">170</span><br></pre></td><td class="code"><pre><span class="line">&lt;template&gt;</span><br><span class="line">  &lt;div class=&quot;sign&quot;&gt;</span><br><span class="line">    &lt;p class=&quot;title&quot;&gt;用户登录&lt;/p&gt;</span><br><span class="line">    &lt;!-- 在 ElTabs 组件上使用 v-model 指令与我们之前在自定义组件上使用道理是相同的 --&gt;</span><br><span class="line">    &lt;el-tabs v-model=&quot;paneName&quot; type=&quot;border-card&quot; class=&quot;tabs&quot;&gt;</span><br><span class="line">      </span><br><span class="line">      &lt;el-tab-pane label=&quot;账号&quot; name=&quot;account&quot;&gt;</span><br><span class="line">        &lt;el-input v-model=&quot;user.account&quot; placeholder=&quot;请输入登录账号&quot;&gt;</span><br><span class="line">          &lt;template #prepend&gt;登录账号&lt;/template&gt;</span><br><span class="line">        &lt;/el-input&gt;</span><br><span class="line">        &lt;el-input v-model=&quot;user.password&quot; placeholder=&quot;请输入登录密码&quot;&gt;</span><br><span class="line">          &lt;template #prepend&gt;登录密码&lt;/template&gt;</span><br><span class="line">        &lt;/el-input&gt;</span><br><span class="line">        &lt;el-row&gt;</span><br><span class="line">          &lt;el-col :offset=&quot;20&quot; :span=&quot;4&quot; style=&quot;text-align:right&quot;&gt;</span><br><span class="line">            &lt;el-button type=&quot;primary&quot; @click=&quot;loginByAccount&quot;&gt;登录&lt;/el-button&gt;</span><br><span class="line">          &lt;/el-col&gt;</span><br><span class="line">        &lt;/el-row&gt;</span><br><span class="line">      &lt;/el-tab-pane&gt;</span><br><span class="line"></span><br><span class="line">      &lt;el-tab-pane label=&quot;邮箱&quot; name=&quot;email&quot;&gt;</span><br><span class="line">        &lt;el-input v-model=&quot;user.email&quot; placeholder=&quot;请输入登录邮箱&quot;&gt;</span><br><span class="line">          &lt;template #prepend&gt;登录邮箱&lt;/template&gt;</span><br><span class="line">        &lt;/el-input&gt;</span><br><span class="line">        &lt;el-input v-model=&quot;user.password&quot; placeholder=&quot;请输入登录密码&quot;&gt;</span><br><span class="line">          &lt;template #prepend&gt;登录密码&lt;/template&gt;</span><br><span class="line">        &lt;/el-input&gt;</span><br><span class="line">        &lt;el-row&gt;</span><br><span class="line">          &lt;el-col :offset=&quot;20&quot; :span=&quot;4&quot; style=&quot;text-align:right&quot;&gt;</span><br><span class="line">            &lt;el-button type=&quot;primary&quot; @click=&quot;loginByEmail&quot;&gt;登录&lt;/el-button&gt;</span><br><span class="line">          &lt;/el-col&gt;</span><br><span class="line">        &lt;/el-row&gt;</span><br><span class="line">      &lt;/el-tab-pane&gt;</span><br><span class="line"></span><br><span class="line">      &lt;el-tab-pane label=&quot;手机号&quot; name=&quot;tel&quot;&gt;</span><br><span class="line">        &lt;el-row class=&quot;row&quot;&gt;</span><br><span class="line">          &lt;el-col :span=&quot;4&quot; class=&quot;label&quot;&gt;手机号&lt;/el-col&gt;</span><br><span class="line">          &lt;el-col :offset=&quot;1&quot; :span=&quot;19&quot;&gt;</span><br><span class="line">            &lt;el-input v-model=&quot;user.tel&quot; placeholder=&quot;请输入手机号&quot; /&gt;</span><br><span class="line">          &lt;/el-col&gt;</span><br><span class="line">        &lt;/el-row&gt;</span><br><span class="line">        &lt;el-row class=&quot;row&quot;&gt;</span><br><span class="line">          &lt;el-col :span=&quot;4&quot; class=&quot;label&quot;&gt;登录密码&lt;/el-col&gt;</span><br><span class="line">          &lt;el-col :offset=&quot;1&quot; :span=&quot;19&quot;&gt;</span><br><span class="line">            &lt;el-input v-model=&quot;user.password&quot; placeholder=&quot;请输入登录密码&quot; /&gt;</span><br><span class="line">          &lt;/el-col&gt;</span><br><span class="line">        &lt;/el-row&gt;</span><br><span class="line">        &lt;el-row class=&quot;row&quot;&gt;</span><br><span class="line">          &lt;el-col :offset=&quot;5&quot; :span=&quot;20&quot;&gt;</span><br><span class="line">            &lt;el-button type=&quot;primary&quot; @click=&quot;loginByTel&quot;&gt;登录&lt;/el-button&gt;</span><br><span class="line">          &lt;/el-col&gt;</span><br><span class="line">        &lt;/el-row&gt;</span><br><span class="line">      &lt;/el-tab-pane&gt;</span><br><span class="line">    &lt;/el-tabs&gt;</span><br><span class="line">    &lt;div class=&quot;message&quot;&gt;&#123;&#123; message &#125;&#125;&lt;/div&gt;</span><br><span class="line">  &lt;/div&gt;</span><br><span class="line">&lt;/template&gt;</span><br><span class="line"></span><br><span class="line">&lt;script&gt;</span><br><span class="line">import &#123; ElTabs, ElTabPane, ElInput, ElRow, ElCol, ElButton&#125; from &#x27;element-plus&#x27;;</span><br><span class="line"></span><br><span class="line">export default &#123;</span><br><span class="line">  name: &#x27;SignInView&#x27;,</span><br><span class="line">  data()&#123;</span><br><span class="line">    return &#123;</span><br><span class="line">      paneName: &#x27;tel&#x27;,</span><br><span class="line">      user: &#123;</span><br><span class="line">        account: &#x27;&#x27;,</span><br><span class="line">        email:&#x27;&#x27;,</span><br><span class="line">        tel: &#x27;&#x27;,</span><br><span class="line">        password: &#x27;&#x27;</span><br><span class="line">      &#125;,</span><br><span class="line">      message: &#x27;&#x27;</span><br><span class="line">    &#125;</span><br><span class="line">  &#125;,</span><br><span class="line">  methods: &#123;</span><br><span class="line">    signIn(type)&#123;</span><br><span class="line">      const params = &#123;</span><br><span class="line">        [type]: this.user[type] ,</span><br><span class="line">        password: this.user.password</span><br><span class="line">      &#125;</span><br><span class="line">      console.log( params );</span><br><span class="line"></span><br><span class="line">      // 注意 `/back` 是在 `vite.config.js` 的 proxy 中配置的前缀</span><br><span class="line">      fetch(&#x27;/back/user/sign/in&#x27;,&#123;</span><br><span class="line">        method: &#x27;post&#x27;,</span><br><span class="line">        headers: &#123; &#x27;content-type&#x27;: &#x27;application/json&#x27; &#125;,</span><br><span class="line">        body: JSON.stringify( params )</span><br><span class="line">      &#125;).then( resp =&gt; &#123;</span><br><span class="line">        return resp.json();</span><br><span class="line">      &#125;).then( data =&gt; &#123;</span><br><span class="line">        // 注意 `1101` 是 user-back-end 中的 constant/user.js 约定的</span><br><span class="line">        if( data.code == 1101 ) &#123;</span><br><span class="line">          // 保存认证信息( 即将 JWT 保存到 sessionStorage 中 )</span><br><span class="line">          sessionStorage.setItem( &#x27;token&#x27; , data.result.token );</span><br><span class="line">          // 编程式导航</span><br><span class="line">          this.$router.push( &#123; name: &#x27;list&#x27; &#125; );</span><br><span class="line">          return; // 让当前函数结束执行以防止后续代码的执行</span><br><span class="line">        &#125;</span><br><span class="line">        this.message = data.desc ;</span><br><span class="line">      &#125;).catch( cause =&gt; &#123;</span><br><span class="line">        console.log( cause );</span><br><span class="line">      &#125;);</span><br><span class="line">    &#125;,</span><br><span class="line">    loginByAccount()&#123;</span><br><span class="line">      if( this.user.account == &#x27;&#x27; ) &#123;</span><br><span class="line">        this.message = &#x27;请先输入登录账号&#x27;;</span><br><span class="line">        return;</span><br><span class="line">      &#125;</span><br><span class="line">      if( this.user.password == &#x27;&#x27; ) &#123;</span><br><span class="line">        this.message = &#x27;请先输入登录密码&#x27;;</span><br><span class="line">        return;</span><br><span class="line">      &#125;</span><br><span class="line">      // 调用 signIn 方法完成登录操作</span><br><span class="line">      this.signIn( &#x27;account&#x27; );</span><br><span class="line">    &#125;,</span><br><span class="line">    loginByEmail()&#123;</span><br><span class="line">      if( this.user.email == &#x27;&#x27; ) &#123;</span><br><span class="line">        this.message = &#x27;请先输入邮箱&#x27;;</span><br><span class="line">        return;</span><br><span class="line">      &#125;</span><br><span class="line">      if( this.user.password == &#x27;&#x27; ) &#123;</span><br><span class="line">        this.message = &#x27;请先输入登录密码&#x27;;</span><br><span class="line">        return;</span><br><span class="line">      &#125;</span><br><span class="line">      // 调用 signIn 方法完成登录操作</span><br><span class="line">      this.signIn( &#x27;email&#x27; );</span><br><span class="line">    &#125;,</span><br><span class="line">    loginByTel()&#123;</span><br><span class="line">      if( this.user.tel == &#x27;&#x27; ) &#123;</span><br><span class="line">        this.message = &#x27;请先输入手机号&#x27;;</span><br><span class="line">        return;</span><br><span class="line">      &#125;</span><br><span class="line">      if( this.user.password == &#x27;&#x27; ) &#123;</span><br><span class="line">        this.message = &#x27;请先输入登录密码&#x27;;</span><br><span class="line">        return;</span><br><span class="line">      &#125;</span><br><span class="line">      // 调用 signIn 方法完成登录操作</span><br><span class="line">      this.signIn( &#x27;tel&#x27; );</span><br><span class="line">    &#125;</span><br><span class="line">  &#125;,</span><br><span class="line">  components: &#123; ElTabs, ElTabPane, ElInput, ElRow, ElCol, ElButton&#125;</span><br><span class="line">&#125;</span><br><span class="line">&lt;/script&gt;</span><br><span class="line"></span><br><span class="line">&lt;style scoped&gt;</span><br><span class="line">.sign &#123;</span><br><span class="line">  margin: 25px auto;</span><br><span class="line">  border: 1px solid transparent;</span><br><span class="line">  box-shadow: 0 0 30px -10px blue;</span><br><span class="line">  width: 60vw;</span><br><span class="line">&#125;</span><br><span class="line">.title &#123;</span><br><span class="line">  margin: 10px;</span><br><span class="line">  text-align: center;</span><br><span class="line">  font-size: 30px;</span><br><span class="line">&#125;</span><br><span class="line">.tabs &#123;</span><br><span class="line">  margin: 10px;</span><br><span class="line">&#125;</span><br><span class="line">.row &#123;</span><br><span class="line">  margin: 10px;</span><br><span class="line">&#125;</span><br><span class="line">.label &#123;</span><br><span class="line">  text-align: right;</span><br><span class="line">&#125;</span><br><span class="line">.message &#123;</span><br><span class="line">  margin: 10px;</span><br><span class="line">&#125;</span><br><span class="line">&lt;/style&gt;</span><br></pre></td></tr></table></figure>





<h4 id="2-3-5、注册组件"><a href="#2-3-5、注册组件" class="headerlink" title="2.3.5、注册组件"></a>2.3.5、注册组件</h4><p>在 <code>src/components</code> 目录中创建 <code>SignUpView.vue</code> 充当用于用户注册组件。</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br><span class="line">82</span><br><span class="line">83</span><br><span class="line">84</span><br><span class="line">85</span><br><span class="line">86</span><br><span class="line">87</span><br><span class="line">88</span><br><span class="line">89</span><br><span class="line">90</span><br><span class="line">91</span><br><span class="line">92</span><br><span class="line">93</span><br><span class="line">94</span><br><span class="line">95</span><br><span class="line">96</span><br><span class="line">97</span><br><span class="line">98</span><br><span class="line">99</span><br><span class="line">100</span><br><span class="line">101</span><br><span class="line">102</span><br><span class="line">103</span><br><span class="line">104</span><br><span class="line">105</span><br><span class="line">106</span><br><span class="line">107</span><br><span class="line">108</span><br><span class="line">109</span><br><span class="line">110</span><br><span class="line">111</span><br><span class="line">112</span><br><span class="line">113</span><br><span class="line">114</span><br><span class="line">115</span><br><span class="line">116</span><br><span class="line">117</span><br><span class="line">118</span><br><span class="line">119</span><br><span class="line">120</span><br><span class="line">121</span><br><span class="line">122</span><br><span class="line">123</span><br><span class="line">124</span><br><span class="line">125</span><br><span class="line">126</span><br><span class="line">127</span><br><span class="line">128</span><br><span class="line">129</span><br></pre></td><td class="code"><pre><span class="line">&lt;template&gt;</span><br><span class="line">  &lt;div class=&quot;sign&quot;&gt;</span><br><span class="line">    &lt;p class=&quot;title&quot;&gt;用户注册&lt;/p&gt;</span><br><span class="line">    &lt;div class=&quot;message&quot;&gt;&#123;&#123; message &#125;&#125;&lt;/div&gt;</span><br><span class="line">    &lt;el-form label-position=&quot;right&quot; label-width=&quot;120px&quot; class=&quot;form&quot;&gt;</span><br><span class="line">      &lt;el-form-item label=&quot;账号&quot;&gt;</span><br><span class="line">        &lt;el-input type=&quot;text&quot; v-model=&quot;user.account&quot; /&gt;</span><br><span class="line">      &lt;/el-form-item&gt;</span><br><span class="line">      &lt;el-form-item label=&quot;邮箱&quot;&gt;</span><br><span class="line">        &lt;el-input type=&quot;text&quot; v-model=&quot;user.email&quot; /&gt;</span><br><span class="line">      &lt;/el-form-item&gt;</span><br><span class="line">      &lt;el-form-item label=&quot;手机号&quot;&gt;</span><br><span class="line">        &lt;el-input type=&quot;text&quot; v-model=&quot;user.tel&quot; /&gt;</span><br><span class="line">      &lt;/el-form-item&gt;</span><br><span class="line">      &lt;el-form-item label=&quot;登录密码&quot;&gt;</span><br><span class="line">        &lt;el-input type=&quot;password&quot; v-model=&quot;user.password&quot; /&gt;</span><br><span class="line">      &lt;/el-form-item&gt;</span><br><span class="line">      &lt;el-form-item label=&quot;确认密码&quot;&gt;</span><br><span class="line">        &lt;el-input type=&quot;password&quot; v-model=&quot;user.confirm&quot; /&gt;</span><br><span class="line">      &lt;/el-form-item&gt;</span><br><span class="line">      &lt;el-form-item&gt;</span><br><span class="line">        &lt;el-button type=&quot;primary&quot; @click=&quot;signUp&quot;&gt;注册&lt;/el-button&gt;</span><br><span class="line">      &lt;/el-form-item&gt;</span><br><span class="line">    &lt;/el-form&gt;</span><br><span class="line">  &lt;/div&gt;</span><br><span class="line">&lt;/template&gt;</span><br><span class="line"></span><br><span class="line">&lt;script&gt;</span><br><span class="line">import &#123; ElForm,ElFormItem,ElInput, ElRow, ElCol, ElButton&#125; from &#x27;element-plus&#x27;;</span><br><span class="line"></span><br><span class="line">export default &#123;</span><br><span class="line">  name: &#x27;SignInView&#x27;,</span><br><span class="line">  data()&#123;</span><br><span class="line">    return &#123;</span><br><span class="line">      user: &#123;</span><br><span class="line">        account: &#x27;&#x27;,</span><br><span class="line">        email:&#x27;&#x27;,</span><br><span class="line">        tel: &#x27;&#x27;,</span><br><span class="line">        password: &#x27;&#x27;,</span><br><span class="line">        confirm: &#x27;&#x27;</span><br><span class="line">      &#125;,</span><br><span class="line">      message: &#x27;&#x27;</span><br><span class="line">    &#125;</span><br><span class="line">  &#125;,</span><br><span class="line">  methods: &#123;</span><br><span class="line">    signUp()&#123;</span><br><span class="line">      console.log( &#x27;user: &#x27; , this.user );</span><br><span class="line">      if( this.validate() ) &#123;</span><br><span class="line">        const x = &#123;</span><br><span class="line">          account: this.user.account,</span><br><span class="line">          email: this.user.email,</span><br><span class="line">          tel: this.user.tel,</span><br><span class="line">          password: this.user.password</span><br><span class="line">        &#125;</span><br><span class="line">        // 这里的 `/back` 是在 `vite.config.js` 中配置的前缀</span><br><span class="line">        let url = &#x27;/back/user/sign/up&#x27;;</span><br><span class="line">        // 校验成功即可向后端发送数据</span><br><span class="line">        fetch( url , &#123;</span><br><span class="line">          method: &#x27;PUT&#x27;,</span><br><span class="line">          headers: &#123; </span><br><span class="line">            &#x27;content-type&#x27;: &#x27;application/json&#x27; </span><br><span class="line">          &#125;,</span><br><span class="line">          body: JSON.stringify( x )</span><br><span class="line">        &#125;).then( resp =&gt; &#123; </span><br><span class="line">          // 调用 resposne 的 json 方法从 响应对象 中获取数据</span><br><span class="line">          return resp.json(); </span><br><span class="line">        &#125;).then( data =&gt; &#123;</span><br><span class="line">          // 2101 是后端的 constant/user.js 约定的操作编码</span><br><span class="line">          if( data.code == 2101 ) &#123;</span><br><span class="line">            // 编程式导航</span><br><span class="line">            this.$router.push( &#123; name: &#x27;signIn&#x27; &#125; );</span><br><span class="line">            return ; // 让当前函数结束以避免执行该函数中后续的代码</span><br><span class="line">          &#125;</span><br><span class="line">          this.message = data.desc ;</span><br><span class="line">        &#125;).catch( cause =&gt; &#123;</span><br><span class="line">          console.log( cause );</span><br><span class="line">        &#125;);</span><br><span class="line">      &#125;</span><br><span class="line">    &#125;,</span><br><span class="line">    validate()&#123;</span><br><span class="line">      // 解构赋值</span><br><span class="line">      let &#123; account , email , tel , password , confirm &#125; = this.user ;</span><br><span class="line">      // 若 account 的取值是 空字符串 则 !account 就是 true</span><br><span class="line">      // 判断 account 、email 、tel 是否皆为 空字符串</span><br><span class="line">      if( !account &amp;&amp; !email &amp;&amp; !tel ) &#123;</span><br><span class="line">        this.message = &#x27;你至少需要填写账号、邮箱、手机号其中的一项&#x27; ;</span><br><span class="line">        return false ;</span><br><span class="line">      &#125;</span><br><span class="line"></span><br><span class="line">      if( !password )&#123;</span><br><span class="line">        this.message = &#x27;你必须填写登录时使用的密码&#x27; ;</span><br><span class="line">        return false ;</span><br><span class="line">      &#125;</span><br><span class="line"></span><br><span class="line">      if( password != confirm) &#123;</span><br><span class="line">        this.message = &#x27;两次输入密码不一致&#x27; ;</span><br><span class="line">        return false ;</span><br><span class="line">      &#125;</span><br><span class="line"></span><br><span class="line">      // 清除页面上的提示信息</span><br><span class="line">      this.message = &#x27;&#x27;;</span><br><span class="line">      // 校验通过，返回true</span><br><span class="line">      return true;</span><br><span class="line">    &#125;</span><br><span class="line">  &#125;,</span><br><span class="line">  components: &#123; ElForm,ElFormItem,ElInput, ElRow, ElCol, ElButton&#125;</span><br><span class="line">&#125;</span><br><span class="line">&lt;/script&gt;</span><br><span class="line"></span><br><span class="line">&lt;style scoped&gt;</span><br><span class="line">.sign &#123;</span><br><span class="line">  margin: 25px auto;</span><br><span class="line">  border: 1px solid transparent;</span><br><span class="line">  box-shadow: 0 0 30px -10px blue;</span><br><span class="line">  width: 60vw;</span><br><span class="line">&#125;</span><br><span class="line">.title &#123;</span><br><span class="line">  margin: 10px;</span><br><span class="line">  text-align: center;</span><br><span class="line">  font-size: 30px;</span><br><span class="line">&#125;</span><br><span class="line">.form &#123;</span><br><span class="line">  margin-right: 25px;</span><br><span class="line">&#125;</span><br><span class="line">.message &#123;</span><br><span class="line">  margin: 10px;</span><br><span class="line">  text-align: center;</span><br><span class="line">&#125;</span><br><span class="line">&lt;/style&gt;</span><br></pre></td></tr></table></figure>





<h4 id="2-3-6、用户列表组件"><a href="#2-3-6、用户列表组件" class="headerlink" title="2.3.6、用户列表组件"></a>2.3.6、用户列表组件</h4><p>在 <code>src/components</code> 目录中创建 <code>ListView.vue</code> 充当用于用户列表组件。</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span 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class="line">122</span><br><span class="line">123</span><br><span class="line">124</span><br><span class="line">125</span><br><span class="line">126</span><br><span class="line">127</span><br><span class="line">128</span><br><span class="line">129</span><br><span class="line">130</span><br><span class="line">131</span><br><span class="line">132</span><br><span class="line">133</span><br><span class="line">134</span><br><span class="line">135</span><br><span class="line">136</span><br><span class="line">137</span><br><span class="line">138</span><br><span class="line">139</span><br><span class="line">140</span><br><span class="line">141</span><br><span class="line">142</span><br><span class="line">143</span><br><span class="line">144</span><br><span class="line">145</span><br><span class="line">146</span><br><span class="line">147</span><br><span class="line">148</span><br><span class="line">149</span><br><span class="line">150</span><br><span class="line">151</span><br><span class="line">152</span><br><span class="line">153</span><br><span class="line">154</span><br><span class="line">155</span><br><span class="line">156</span><br><span class="line">157</span><br><span class="line">158</span><br><span class="line">159</span><br><span class="line">160</span><br><span class="line">161</span><br><span class="line">162</span><br><span class="line">163</span><br><span class="line">164</span><br><span class="line">165</span><br><span class="line">166</span><br><span class="line">167</span><br><span class="line">168</span><br><span class="line">169</span><br><span class="line">170</span><br><span class="line">171</span><br><span class="line">172</span><br><span class="line">173</span><br><span class="line">174</span><br><span class="line">175</span><br><span class="line">176</span><br><span class="line">177</span><br><span class="line">178</span><br><span class="line">179</span><br><span class="line">180</span><br><span class="line">181</span><br><span class="line">182</span><br><span class="line">183</span><br><span class="line">184</span><br><span class="line">185</span><br><span class="line">186</span><br><span class="line">187</span><br><span class="line">188</span><br><span class="line">189</span><br><span class="line">190</span><br><span class="line">191</span><br><span class="line">192</span><br><span class="line">193</span><br><span class="line">194</span><br><span class="line">195</span><br><span class="line">196</span><br><span class="line">197</span><br><span class="line">198</span><br><span class="line">199</span><br><span class="line">200</span><br><span class="line">201</span><br><span class="line">202</span><br><span class="line">203</span><br><span class="line">204</span><br><span class="line">205</span><br><span class="line">206</span><br><span class="line">207</span><br><span class="line">208</span><br><span class="line">209</span><br><span class="line">210</span><br><span class="line">211</span><br><span class="line">212</span><br><span class="line">213</span><br><span class="line">214</span><br><span class="line">215</span><br><span class="line">216</span><br><span class="line">217</span><br><span class="line">218</span><br><span class="line">219</span><br><span class="line">220</span><br><span class="line">221</span><br><span class="line">222</span><br><span class="line">223</span><br><span class="line">224</span><br><span class="line">225</span><br><span class="line">226</span><br><span class="line">227</span><br><span class="line">228</span><br><span class="line">229</span><br><span class="line">230</span><br><span class="line">231</span><br><span class="line">232</span><br><span class="line">233</span><br><span class="line">234</span><br><span class="line">235</span><br><span class="line">236</span><br><span class="line">237</span><br><span class="line">238</span><br><span class="line">239</span><br><span class="line">240</span><br><span class="line">241</span><br><span class="line">242</span><br><span class="line">243</span><br><span class="line">244</span><br><span class="line">245</span><br><span class="line">246</span><br><span class="line">247</span><br><span class="line">248</span><br><span class="line">249</span><br><span class="line">250</span><br><span class="line">251</span><br><span class="line">252</span><br><span class="line">253</span><br><span class="line">254</span><br><span class="line">255</span><br><span class="line">256</span><br><span class="line">257</span><br><span class="line">258</span><br><span class="line">259</span><br><span class="line">260</span><br><span class="line">261</span><br><span class="line">262</span><br></pre></td><td class="code"><pre><span class="line">&lt;template&gt;</span><br><span class="line">  &lt;div class=&quot;list&quot;&gt;</span><br><span class="line">    &lt;template v-if=&quot;users.length &gt; 0&quot;&gt;</span><br><span class="line">        &lt;h3&gt;用户列表&lt;/h3&gt;</span><br><span class="line">        &lt;el-row class=&quot;title&quot;&gt;</span><br><span class="line">            &lt;el-col :span=&quot;2&quot;&gt;序号&lt;/el-col&gt;</span><br><span class="line">            &lt;el-col :span=&quot;5&quot;&gt;账号&lt;/el-col&gt;</span><br><span class="line">            &lt;el-col :span=&quot;6&quot;&gt;邮箱&lt;/el-col&gt;</span><br><span class="line">            &lt;el-col :span=&quot;5&quot;&gt;手机号&lt;/el-col&gt;</span><br><span class="line">            &lt;el-col :span=&quot;6&quot;&gt;操作&lt;/el-col&gt;</span><br><span class="line">        &lt;/el-row&gt;</span><br><span class="line">        &lt;el-row class=&quot;item&quot; v-for=&quot;(user,index) in users&quot; :key=&quot;user.id&quot;&gt;</span><br><span class="line">            &lt;el-col :span=&quot;2&quot;&gt;&#123;&#123; index + 1 &#125;&#125;&lt;/el-col&gt;</span><br><span class="line">            &lt;el-col :span=&quot;5&quot;&gt;&#123;&#123; user.account &#125;&#125;&lt;/el-col&gt;</span><br><span class="line">            &lt;el-col :span=&quot;6&quot;&gt;&#123;&#123; user.email &#125;&#125;&lt;/el-col&gt;</span><br><span class="line">            &lt;el-col :span=&quot;5&quot;&gt;&#123;&#123; user.tel &#125;&#125;&lt;/el-col&gt;</span><br><span class="line">            &lt;el-col :span=&quot;6&quot;&gt;</span><br><span class="line">                &lt;el-button type=&quot;primary&quot; size=&quot;small&quot; @click=&quot;detail(user.id)&quot;&gt;详情&lt;/el-button&gt;</span><br><span class="line">                &lt;!-- 用 ElButton 的 icon 属性为按钮绑定图标 --&gt;</span><br><span class="line">                &lt;!-- &lt;el-button type=&quot;primary&quot; size=&quot;small&quot; :icon=&quot;Edit&quot;&gt;编辑&lt;/el-button&gt; --&gt;</span><br><span class="line">                &lt;el-button type=&quot;primary&quot; size=&quot;small&quot; @click=&quot;edit(user.id)&quot;&gt;</span><br><span class="line">                    &lt;el-icon&gt; &lt;Edit /&gt; &lt;/el-icon&gt;</span><br><span class="line">                    编辑</span><br><span class="line">                &lt;/el-button&gt;</span><br><span class="line">                &lt;el-button type=&quot;primary&quot; size=&quot;small&quot; @click=&quot;remove(user.id)&quot;&gt;</span><br><span class="line">                    &lt;!-- 在 ElIcon 中使用 图标组件 --&gt;</span><br><span class="line">                    &lt;el-icon&gt; &lt;Delete /&gt; &lt;/el-icon&gt;</span><br><span class="line">                    删除</span><br><span class="line">                &lt;/el-button&gt;</span><br><span class="line">            &lt;/el-col&gt;</span><br><span class="line">        &lt;/el-row&gt;</span><br><span class="line">    &lt;/template&gt;</span><br><span class="line">    &lt;div class=&quot;none&quot; v-else&gt;</span><br><span class="line">        暂无用户数据</span><br><span class="line">    &lt;/div&gt;</span><br><span class="line">    &lt;!-- 详情对话框 --&gt;</span><br><span class="line">    &lt;el-dialog v-model=&quot;showDetail&quot; :show-close=&quot;false&quot;&gt;</span><br><span class="line">        &lt;template #title&gt;&#123;&#123;user.account&#125;&#125;的详细信息&lt;/template&gt;</span><br><span class="line">        &lt;ul&gt;</span><br><span class="line">            &lt;li&gt;id: &#123;&#123; user.id &#125;&#125;&lt;/li&gt;</span><br><span class="line">            &lt;li&gt;account: &#123;&#123; user.account &#125;&#125;&lt;/li&gt;</span><br><span class="line">            &lt;li&gt;email: &#123;&#123; user.email &#125;&#125;&lt;/li&gt;</span><br><span class="line">            &lt;li&gt;tel: &#123;&#123; user.tel &#125;&#125;&lt;/li&gt;</span><br><span class="line">        &lt;/ul&gt;</span><br><span class="line">        &lt;template #footer&gt;</span><br><span class="line">            &lt;el-button type=&quot;primary&quot; @click=&quot;cleanup&quot;&gt;关闭&lt;/el-button&gt;</span><br><span class="line">        &lt;/template&gt;</span><br><span class="line">    &lt;/el-dialog&gt;</span><br><span class="line">    &lt;!-- 编辑对话框 --&gt;</span><br><span class="line">    &lt;el-dialog v-model=&quot;showEdit&quot; :show-close=&quot;false&quot;&gt;</span><br><span class="line">        &lt;template #title&gt;编辑用户&lt;/template&gt;</span><br><span class="line">        &lt;el-form label-position=&quot;right&quot; label-width=&quot;120px&quot; class=&quot;form&quot;&gt;</span><br><span class="line">            &lt;el-form-item label=&quot;主键&quot;&gt;</span><br><span class="line">                &lt;el-input type=&quot;text&quot; v-model=&quot;user.id&quot; disabled /&gt;</span><br><span class="line">            &lt;/el-form-item&gt;</span><br><span class="line">            &lt;el-form-item label=&quot;账号&quot;&gt;</span><br><span class="line">                &lt;el-input type=&quot;text&quot; v-model=&quot;user.account&quot; /&gt;</span><br><span class="line">            &lt;/el-form-item&gt;</span><br><span class="line">            &lt;el-form-item label=&quot;邮箱&quot;&gt;</span><br><span class="line">                &lt;el-input type=&quot;text&quot; v-model=&quot;user.email&quot; /&gt;</span><br><span class="line">            &lt;/el-form-item&gt;</span><br><span class="line">            &lt;el-form-item label=&quot;手机号&quot;&gt;</span><br><span class="line">                &lt;el-input type=&quot;text&quot; v-model=&quot;user.tel&quot; /&gt;</span><br><span class="line">            &lt;/el-form-item&gt;</span><br><span class="line">        &lt;/el-form&gt;</span><br><span class="line">        &lt;template #footer&gt;</span><br><span class="line">            &lt;el-button type=&quot;primary&quot; @click=&quot;update&quot;&gt;确定&lt;/el-button&gt;</span><br><span class="line">        &lt;/template&gt;</span><br><span class="line">    &lt;/el-dialog&gt;</span><br><span class="line">  &lt;/div&gt;</span><br><span class="line">&lt;/template&gt;</span><br><span class="line"></span><br><span class="line">&lt;script&gt;</span><br><span class="line">// 按需导入 Element Plus 组件</span><br><span class="line">import &#123; </span><br><span class="line">  ElRow, </span><br><span class="line">  ElCol, </span><br><span class="line">  ElButton, </span><br><span class="line">  ElIcon, </span><br><span class="line">  ElDialog, </span><br><span class="line">  ElForm, </span><br><span class="line">  ElFormItem,</span><br><span class="line">  ElInput </span><br><span class="line">&#125; from &#x27;element-plus&#x27;;</span><br><span class="line"></span><br><span class="line">// 按需导入 ElementPlus 图标组件</span><br><span class="line">import &#123; </span><br><span class="line">  Edit, </span><br><span class="line">  Delete </span><br><span class="line">&#125; from &#x27;@element-plus/icons-vue&#x27;;</span><br><span class="line"></span><br><span class="line">export default &#123;</span><br><span class="line">  name: &#x27;ListView&#x27;,</span><br><span class="line">  data()&#123;</span><br><span class="line">      return &#123;</span><br><span class="line">          users: [],</span><br><span class="line">          // 把 ElementPlus 图标组件作为属性来使用</span><br><span class="line">          Edit,</span><br><span class="line">          message: &#x27;&#x27;,</span><br><span class="line">          // 控制详情对话框是否显示</span><br><span class="line">          showDetail: false,</span><br><span class="line">          // 用 user 来表示需要展示或修改的用户对象</span><br><span class="line">          user: &#123;&#125;,</span><br><span class="line">          // 控制编辑对话框是否显示</span><br><span class="line">          showEdit: false,</span><br><span class="line">      &#125;</span><br><span class="line">  &#125;,</span><br><span class="line">  methods: &#123;</span><br><span class="line">      cleanup()&#123;</span><br><span class="line">          this.showDetail = false;</span><br><span class="line">          this.user = &#123;&#125;</span><br><span class="line">      &#125;,</span><br><span class="line">      detail(id)&#123;</span><br><span class="line">        fetch(`/back/user/load/$&#123;id&#125;`,&#123;</span><br><span class="line">            headers: &#123; &#x27;authorization&#x27;: `Bearer $&#123;sessionStorage.getItem( &#x27;token&#x27; )&#125;` &#125;</span><br><span class="line">        &#125;).then( resp =&gt; &#123;</span><br><span class="line">            return resp.json();</span><br><span class="line">        &#125;).then( data =&gt; &#123;</span><br><span class="line">            // 注意 2201 表示查询成功</span><br><span class="line">            if( data.code == 2201 )&#123;</span><br><span class="line">                this.user = data.result; // 将用户数据保存到当前组件user属性中</span><br><span class="line">                this.showDetail = true ; // 让显示用户详情的对话框显示</span><br><span class="line">                return; // 让当前函数立即终止</span><br><span class="line">            &#125;</span><br><span class="line">        &#125;).catch( cause =&gt; &#123;</span><br><span class="line">            console.log( cause );</span><br><span class="line">        &#125;);</span><br><span class="line">      &#125;,</span><br><span class="line">      edit(id)&#123;</span><br><span class="line">          fetch(`/back/user/load/$&#123;id&#125;`,&#123;</span><br><span class="line">            headers: &#123; &#x27;authorization&#x27;: `Bearer $&#123;sessionStorage.getItem( &#x27;token&#x27; )&#125;` &#125;</span><br><span class="line">          &#125;).then( resp =&gt; &#123;</span><br><span class="line">            return resp.json();</span><br><span class="line">          &#125;).then( data =&gt; &#123;</span><br><span class="line">            if( data.code == 2201 )&#123;</span><br><span class="line">                this.user = data.result;</span><br><span class="line">                this.showEdit = true;</span><br><span class="line">                return ;</span><br><span class="line">            &#125;</span><br><span class="line">            console.log( data.desc );</span><br><span class="line">          &#125;).catch( cause =&gt; &#123;</span><br><span class="line">              console.log( cause );</span><br><span class="line">          &#125;)</span><br><span class="line">      &#125;,</span><br><span class="line">      update()&#123;</span><br><span class="line">        console.log( this.user );</span><br><span class="line">        fetch(&#x27;/back/user/update&#x27;,&#123;</span><br><span class="line">          method: &#x27;post&#x27;,</span><br><span class="line">          headers: &#123; </span><br><span class="line">            &#x27;authorization&#x27;: `Bearer $&#123;sessionStorage.getItem( &#x27;token&#x27; )&#125;`,</span><br><span class="line">            &#x27;content-type&#x27;: &#x27;application/json&#x27;</span><br><span class="line">          &#125;,</span><br><span class="line">          body: JSON.stringify( this.user )</span><br><span class="line">        &#125;).then( resp =&gt; resp.json() )</span><br><span class="line">        .then( data =&gt; &#123;</span><br><span class="line">          if( data.code == 2301 )&#123;</span><br><span class="line">            // 更新数组中指定的用户对象</span><br><span class="line">            let u = this.users.find( u =&gt; u.id == this.user.id );</span><br><span class="line">            Object.assign( u , this.user );</span><br><span class="line">            // 关闭编辑窗口</span><br><span class="line">            this.showEdit = false ;</span><br><span class="line">            // 重置 user 属性</span><br><span class="line">            this.user = &#123;&#125;</span><br><span class="line">            return ;</span><br><span class="line">          &#125;</span><br><span class="line">          console.log( data.desc );</span><br><span class="line">        &#125;).catch( cause =&gt; &#123;</span><br><span class="line">          console.log( cause );</span><br><span class="line">        &#125;)</span><br><span class="line">        </span><br><span class="line">      &#125;,</span><br><span class="line">      remove(id)&#123;</span><br><span class="line">          fetch(`/back/user/remove/$&#123;id&#125;`,&#123;</span><br><span class="line">            method: &#x27;delete&#x27;,</span><br><span class="line">            headers: &#123; &#x27;authorization&#x27;: `Bearer $&#123;sessionStorage.getItem( &#x27;token&#x27; )&#125;` &#125;</span><br><span class="line">          &#125;).then( resp =&gt; resp.json() )</span><br><span class="line">          .then( data =&gt; &#123;</span><br><span class="line">            // 注意 2401 是 后端工程中 constant/user.js 中约定的操作代码</span><br><span class="line">            if( data.code == 2401 ) &#123;</span><br><span class="line">              // 当服务端将数据库中的数据删除成功后即可删除页面上显示的数据</span><br><span class="line">              let index = this.users.findIndex( u =&gt; u.id == id );</span><br><span class="line">              this.users.splice( index , 1 );</span><br><span class="line">              return; // 让当前函数立即结束</span><br><span class="line">            &#125;</span><br><span class="line">            this.message = data.desc ;</span><br><span class="line">          &#125;).catch( cause =&gt; &#123;</span><br><span class="line">            console.log( cause );</span><br><span class="line">          &#125;);</span><br><span class="line">      &#125;</span><br><span class="line">  &#125;,</span><br><span class="line">  // 局部注册组件</span><br><span class="line">  components: &#123;   </span><br><span class="line">    ElRow, </span><br><span class="line">    ElCol, </span><br><span class="line">    ElButton, </span><br><span class="line">    ElIcon, </span><br><span class="line">    ElDialog, </span><br><span class="line">    ElForm, </span><br><span class="line">    ElFormItem,</span><br><span class="line">    ElInput,</span><br><span class="line">    Edit, </span><br><span class="line">    Delete </span><br><span class="line">  &#125;,</span><br><span class="line">  // 生命周期钩子</span><br><span class="line">  created()&#123;</span><br><span class="line">    // 尝试从 sessionStorage 中获取获取 token</span><br><span class="line">    let token = sessionStorage.getItem( &#x27;token&#x27; );</span><br><span class="line">    if( !token )&#123;</span><br><span class="line">        return ; // 若 token 不存在则直接返回</span><br><span class="line">    &#125;</span><br><span class="line">    // 发送异步请求并将获取到的用户数据设置到 user 数组中</span><br><span class="line">    fetch( &#x27;/back/user/list&#x27; , &#123;</span><br><span class="line">        method: &#x27;GET&#x27;,</span><br><span class="line">        headers: &#123; </span><br><span class="line">            &#x27;authorization&#x27;: `Bearer $&#123;token&#125;`</span><br><span class="line">        &#125;</span><br><span class="line">    &#125;).then( resp =&gt; resp.json() )</span><br><span class="line">    .then( data =&gt; &#123;</span><br><span class="line">        // 注意 2201 是在 后端工程的 constant/user.js 中约定的操作代码</span><br><span class="line">        if( data.code == 2201 ) &#123;</span><br><span class="line">            this.users = data.result ;</span><br><span class="line">            return;</span><br><span class="line">        &#125;</span><br><span class="line">        console.log( data.desc );</span><br><span class="line">    &#125;).catch( cause =&gt; &#123;</span><br><span class="line">        console.log( cause );</span><br><span class="line">    &#125;);</span><br><span class="line">  &#125;</span><br><span class="line">&#125;</span><br><span class="line">&lt;/script&gt;</span><br><span class="line"></span><br><span class="line">&lt;style scoped&gt;</span><br><span class="line">.list &#123;</span><br><span class="line">    margin: 15px auto;</span><br><span class="line">    border: 1px solid transparent;</span><br><span class="line">    box-shadow: 0 0 20px -10px gray;</span><br><span class="line">    min-height: 50px;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line">h3 &#123; text-align: center ; &#125;</span><br><span class="line"></span><br><span class="line">.title &#123;</span><br><span class="line">    color: #fff;</span><br><span class="line">    font-size: 18px;</span><br><span class="line">    background: #66f;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line">.title,</span><br><span class="line">.item &#123;</span><br><span class="line">    margin: 10px;</span><br><span class="line">    line-height: 30px;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line">.item &#123;</span><br><span class="line">    border-bottom: 1px solid #dedede;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line">.none &#123;</span><br><span class="line">    text-align: center;</span><br><span class="line">    line-height: 50px;</span><br><span class="line">&#125;</span><br><span class="line">&lt;/style&gt;</span><br></pre></td></tr></table></figure>





<h4 id="2-3-7、个人设置组件"><a href="#2-3-7、个人设置组件" class="headerlink" title="2.3.7、个人设置组件"></a>2.3.7、个人设置组件</h4><p>在 <code>src/components</code> 目录中创建 <code>SettingsView.vue</code> 充当用于个人设置组件。</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br><span class="line">82</span><br><span class="line">83</span><br><span class="line">84</span><br><span class="line">85</span><br><span class="line">86</span><br><span class="line">87</span><br><span class="line">88</span><br><span class="line">89</span><br><span class="line">90</span><br><span class="line">91</span><br><span class="line">92</span><br><span class="line">93</span><br><span class="line">94</span><br><span class="line">95</span><br><span class="line">96</span><br><span class="line">97</span><br><span class="line">98</span><br><span class="line">99</span><br><span class="line">100</span><br></pre></td><td class="code"><pre><span class="line">&lt;template&gt;</span><br><span class="line">  &lt;div class=&quot;settings&quot;&gt;</span><br><span class="line">    &lt;h3&gt;个人设置&lt;/h3&gt;</span><br><span class="line">    &lt;el-form label-position=&quot;right&quot; label-width=&quot;120px&quot; class=&quot;form&quot;&gt;</span><br><span class="line">      &lt;el-form-item label=&quot;主键&quot;&gt;</span><br><span class="line">        &lt;el-input type=&quot;text&quot; v-model=&quot;user.id&quot; disabled /&gt;</span><br><span class="line">      &lt;/el-form-item&gt;</span><br><span class="line">      &lt;el-form-item label=&quot;账号&quot;&gt;</span><br><span class="line">        &lt;el-input type=&quot;text&quot; v-model=&quot;user.account&quot; /&gt;</span><br><span class="line">      &lt;/el-form-item&gt;</span><br><span class="line">      &lt;el-form-item label=&quot;邮箱&quot;&gt;</span><br><span class="line">        &lt;el-input type=&quot;text&quot; v-model=&quot;user.email&quot; /&gt;</span><br><span class="line">      &lt;/el-form-item&gt;</span><br><span class="line">      &lt;el-form-item label=&quot;手机号&quot;&gt;</span><br><span class="line">        &lt;el-input type=&quot;text&quot; v-model=&quot;user.tel&quot; /&gt;</span><br><span class="line">      &lt;/el-form-item&gt;</span><br><span class="line">      &lt;el-form-item&gt;</span><br><span class="line">        &lt;el-button type=&quot;primary&quot; @click=&quot;update&quot;&gt;确定&lt;/el-button&gt;</span><br><span class="line">      &lt;/el-form-item&gt;</span><br><span class="line">    &lt;/el-form&gt;</span><br><span class="line">  &lt;/div&gt;</span><br><span class="line">&lt;/template&gt;</span><br><span class="line"></span><br><span class="line">&lt;script&gt;</span><br><span class="line">// 按需导入 Element Plus 组件</span><br><span class="line">import &#123; </span><br><span class="line">  ElButton, </span><br><span class="line">  ElForm, </span><br><span class="line">  ElFormItem,</span><br><span class="line">  ElInput ,</span><br><span class="line">  ElNotification </span><br><span class="line">&#125; from &#x27;element-plus&#x27;;</span><br><span class="line">export default &#123;</span><br><span class="line">  name: &#x27;SettingsView&#x27;,</span><br><span class="line">  data()&#123;</span><br><span class="line">    return &#123;</span><br><span class="line">      user: &#123;&#125;,</span><br><span class="line">    &#125;</span><br><span class="line">  &#125;,</span><br><span class="line">  methods: &#123;</span><br><span class="line">    update()&#123;</span><br><span class="line">      fetch(&#x27;/back/user/update&#x27;,&#123;</span><br><span class="line">        method: &#x27;post&#x27;,</span><br><span class="line">        headers: &#123; </span><br><span class="line">          &#x27;authorization&#x27;: `Bearer $&#123;sessionStorage.getItem( &#x27;token&#x27; )&#125;`,</span><br><span class="line">          &#x27;content-type&#x27;: &#x27;application/json&#x27;</span><br><span class="line">        &#125;,</span><br><span class="line">        body: JSON.stringify( this.user )</span><br><span class="line">      &#125;).then( resp =&gt; resp.json() )</span><br><span class="line">      .then( data =&gt; &#123;</span><br><span class="line">        if( data.code == 2301 ) &#123;</span><br><span class="line">          ElNotification(&#123;</span><br><span class="line">            type: &#x27;success&#x27;,</span><br><span class="line">            title: data.desc,</span><br><span class="line">            message: `个人信息修改成功`,</span><br><span class="line">          &#125;);</span><br><span class="line">          return;</span><br><span class="line">        &#125;</span><br><span class="line">        ElNotification(&#123;</span><br><span class="line">            type: &#x27;warning&#x27;,</span><br><span class="line">            title: data.desc,</span><br><span class="line">            message: data.reason,</span><br><span class="line">        &#125;);</span><br><span class="line">      &#125;).catch( cause =&gt; &#123;</span><br><span class="line">        ElNotification(&#123;</span><br><span class="line">            type: &#x27;error&#x27;,</span><br><span class="line">            title: &#x27;错误&#x27;,</span><br><span class="line">            message: cause,</span><br><span class="line">        &#125;);</span><br><span class="line">      &#125;);</span><br><span class="line">    &#125;</span><br><span class="line">  &#125;,</span><br><span class="line">  components: &#123;</span><br><span class="line">    ElButton, </span><br><span class="line">    ElForm, </span><br><span class="line">    ElFormItem,</span><br><span class="line">    ElInput </span><br><span class="line">  &#125;,</span><br><span class="line">  created()&#123;</span><br><span class="line">    fetch(&#x27;/back/user/find&#x27;,&#123;</span><br><span class="line">      method: &#x27;GET&#x27;,</span><br><span class="line">      headers: &#123; &#x27;authorization&#x27;: `Bearer $&#123;sessionStorage.getItem( &#x27;token&#x27; )&#125;` &#125;</span><br><span class="line">    &#125;).then( resp =&gt; &#123;</span><br><span class="line">      return resp.json();</span><br><span class="line">    &#125;).then( data =&gt; &#123;</span><br><span class="line">      if( data.code == 2201 ) &#123;</span><br><span class="line">        this.user = data.result ;</span><br><span class="line">        return;</span><br><span class="line">      &#125;</span><br><span class="line">      console.log( data.desc );</span><br><span class="line">    &#125;).catch( cause =&gt; &#123;</span><br><span class="line">      console.log( cause );</span><br><span class="line">    &#125;);</span><br><span class="line">  &#125;</span><br><span class="line">&#125;</span><br><span class="line">&lt;/script&gt;</span><br><span class="line"></span><br><span class="line">&lt;style scoped&gt;</span><br><span class="line">h3 &#123; text-align: center; &#125;</span><br><span class="line">&lt;/style&gt;</span><br></pre></td></tr></table></figure>



<h4 id="2-3-8、用户新增组件"><a href="#2-3-8、用户新增组件" class="headerlink" title="2.3.8、用户新增组件"></a>2.3.8、用户新增组件</h4><p>在 <code>src/components</code> 目录中创建 <code>AddView.vue</code> 充当用于用户新增组件。</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br><span class="line">82</span><br><span class="line">83</span><br><span class="line">84</span><br><span class="line">85</span><br><span class="line">86</span><br><span class="line">87</span><br><span class="line">88</span><br><span class="line">89</span><br><span class="line">90</span><br><span class="line">91</span><br><span class="line">92</span><br><span class="line">93</span><br><span class="line">94</span><br><span class="line">95</span><br><span class="line">96</span><br><span class="line">97</span><br><span class="line">98</span><br><span class="line">99</span><br><span class="line">100</span><br><span class="line">101</span><br><span class="line">102</span><br><span class="line">103</span><br><span class="line">104</span><br><span class="line">105</span><br><span class="line">106</span><br><span class="line">107</span><br><span class="line">108</span><br><span class="line">109</span><br><span class="line">110</span><br><span class="line">111</span><br><span class="line">112</span><br><span class="line">113</span><br><span class="line">114</span><br><span class="line">115</span><br><span class="line">116</span><br><span class="line">117</span><br><span class="line">118</span><br><span class="line">119</span><br><span class="line">120</span><br><span class="line">121</span><br><span class="line">122</span><br><span class="line">123</span><br><span class="line">124</span><br><span class="line">125</span><br><span class="line">126</span><br><span class="line">127</span><br><span class="line">128</span><br></pre></td><td class="code"><pre><span class="line">&lt;template&gt;</span><br><span class="line">  &lt;div class=&quot;sign&quot;&gt;</span><br><span class="line">    &lt;p class=&quot;title&quot;&gt;添加用户&lt;/p&gt;</span><br><span class="line">    &lt;div class=&quot;message&quot;&gt;&#123;&#123; message &#125;&#125;&lt;/div&gt;</span><br><span class="line">    &lt;el-form label-position=&quot;right&quot; label-width=&quot;120px&quot; class=&quot;form&quot;&gt;</span><br><span class="line">      &lt;el-form-item label=&quot;账号&quot;&gt;</span><br><span class="line">        &lt;el-input type=&quot;text&quot; v-model=&quot;user.account&quot; /&gt;</span><br><span class="line">      &lt;/el-form-item&gt;</span><br><span class="line">      &lt;el-form-item label=&quot;邮箱&quot;&gt;</span><br><span class="line">        &lt;el-input type=&quot;text&quot; v-model=&quot;user.email&quot; /&gt;</span><br><span class="line">      &lt;/el-form-item&gt;</span><br><span class="line">      &lt;el-form-item label=&quot;手机号&quot;&gt;</span><br><span class="line">        &lt;el-input type=&quot;text&quot; v-model=&quot;user.tel&quot; /&gt;</span><br><span class="line">      &lt;/el-form-item&gt;</span><br><span class="line">      &lt;el-form-item label=&quot;登录密码&quot;&gt;</span><br><span class="line">        &lt;el-input type=&quot;password&quot; v-model=&quot;user.password&quot; /&gt;</span><br><span class="line">      &lt;/el-form-item&gt;</span><br><span class="line">      &lt;el-form-item label=&quot;确认密码&quot;&gt;</span><br><span class="line">        &lt;el-input type=&quot;password&quot; v-model=&quot;user.confirm&quot; /&gt;</span><br><span class="line">      &lt;/el-form-item&gt;</span><br><span class="line">      &lt;el-form-item&gt;</span><br><span class="line">        &lt;el-button type=&quot;primary&quot; @click=&quot;signUp&quot;&gt;添加&lt;/el-button&gt;</span><br><span class="line">      &lt;/el-form-item&gt;</span><br><span class="line">    &lt;/el-form&gt;</span><br><span class="line">  &lt;/div&gt;</span><br><span class="line">&lt;/template&gt;</span><br><span class="line"></span><br><span class="line">&lt;script&gt;</span><br><span class="line">import &#123; ElForm,ElFormItem,ElInput, ElRow, ElCol, ElButton&#125; from &#x27;element-plus&#x27;;</span><br><span class="line"></span><br><span class="line">export default &#123;</span><br><span class="line">  name: &#x27;AddView&#x27;,</span><br><span class="line">  data()&#123;</span><br><span class="line">    return &#123;</span><br><span class="line">      user: &#123;</span><br><span class="line">        account: &#x27;&#x27;,</span><br><span class="line">        email:&#x27;&#x27;,</span><br><span class="line">        tel: &#x27;&#x27;,</span><br><span class="line">        password: &#x27;&#x27;,</span><br><span class="line">        confirm: &#x27;&#x27;</span><br><span class="line">      &#125;,</span><br><span class="line">      message: &#x27;&#x27;</span><br><span class="line">    &#125;</span><br><span class="line">  &#125;,</span><br><span class="line">  methods: &#123;</span><br><span class="line">    signUp()&#123;</span><br><span class="line">      console.log( &#x27;user: &#x27; , this.user );</span><br><span class="line">      if( this.validate() ) &#123;</span><br><span class="line">        const x = &#123;</span><br><span class="line">          account: this.user.account,</span><br><span class="line">          email: this.user.email,</span><br><span class="line">          tel: this.user.tel,</span><br><span class="line">          password: this.user.password</span><br><span class="line">        &#125;</span><br><span class="line">        // 这里的 `/back` 是在 `vite.config.js` 中配置的前缀</span><br><span class="line">        fetch( &#x27;/back/user/add&#x27; , &#123;</span><br><span class="line">          method: &#x27;PUT&#x27;,</span><br><span class="line">          headers: &#123; </span><br><span class="line">            &#x27;content-type&#x27;: &#x27;application/json&#x27; ,</span><br><span class="line">            &#x27;authorization&#x27;: `Bearer $&#123;sessionStorage.getItem( &#x27;token&#x27; )&#125;`</span><br><span class="line">          &#125;,</span><br><span class="line">          body: JSON.stringify( x )</span><br><span class="line">        &#125;).then( resp =&gt; &#123; </span><br><span class="line">          // 调用 resposne 的 json 方法从 响应对象 中获取数据</span><br><span class="line">          return resp.json(); </span><br><span class="line">        &#125;).then( data =&gt; &#123;</span><br><span class="line">          // 2101 是后端的 constant/user.js 约定的操作编码</span><br><span class="line">          if( data.code == 2101 ) &#123;</span><br><span class="line">            // 编程式导航</span><br><span class="line">            this.$router.push( &#123; name: &#x27;list&#x27; &#125; );</span><br><span class="line">            return ; // 让当前函数结束以避免执行该函数中后续的代码</span><br><span class="line">          &#125;</span><br><span class="line">          this.message = data.desc ;</span><br><span class="line">        &#125;).catch( cause =&gt; &#123;</span><br><span class="line">          console.log( cause );</span><br><span class="line">        &#125;);</span><br><span class="line">      &#125;</span><br><span class="line">    &#125;,</span><br><span class="line">    validate()&#123;</span><br><span class="line">      // 解构赋值</span><br><span class="line">      let &#123; account , email , tel , password , confirm &#125; = this.user ;</span><br><span class="line">      // 若 account 的取值是 空字符串 则 !account 就是 true</span><br><span class="line">      // 判断 account 、email 、tel 是否皆为 空字符串</span><br><span class="line">      if( !account &amp;&amp; !email &amp;&amp; !tel ) &#123;</span><br><span class="line">        this.message = &#x27;你至少需要填写账号、邮箱、手机号其中的一项&#x27; ;</span><br><span class="line">        return false ;</span><br><span class="line">      &#125;</span><br><span class="line"></span><br><span class="line">      if( !password )&#123;</span><br><span class="line">        this.message = &#x27;你必须填写登录时使用的密码&#x27; ;</span><br><span class="line">        return false ;</span><br><span class="line">      &#125;</span><br><span class="line"></span><br><span class="line">      if( password != confirm) &#123;</span><br><span class="line">        this.message = &#x27;两次输入密码不一致&#x27; ;</span><br><span class="line">        return false ;</span><br><span class="line">      &#125;</span><br><span class="line"></span><br><span class="line">      // 清除页面上的提示信息</span><br><span class="line">      this.message = &#x27;&#x27;;</span><br><span class="line">      // 校验通过，返回true</span><br><span class="line">      return true;</span><br><span class="line">    &#125;</span><br><span class="line">  &#125;,</span><br><span class="line">  components: &#123; ElForm,ElFormItem,ElInput, ElRow, ElCol, ElButton&#125;</span><br><span class="line">&#125;</span><br><span class="line">&lt;/script&gt;</span><br><span class="line"></span><br><span class="line">&lt;style scoped&gt;</span><br><span class="line">.sign &#123;</span><br><span class="line">  margin: 25px auto;</span><br><span class="line">  border: 1px solid transparent;</span><br><span class="line">  box-shadow: 0 0 30px -10px gold;</span><br><span class="line">  width: 60vw;</span><br><span class="line">&#125;</span><br><span class="line">.title &#123;</span><br><span class="line">  margin: 10px;</span><br><span class="line">  text-align: center;</span><br><span class="line">  font-size: 30px;</span><br><span class="line">&#125;</span><br><span class="line">.form &#123;</span><br><span class="line">  margin-right: 25px;</span><br><span class="line">&#125;</span><br><span class="line">.message &#123;</span><br><span class="line">  margin: 10px;</span><br><span class="line">  text-align: center;</span><br><span class="line">&#125;</span><br><span class="line">&lt;/style&gt;</span><br></pre></td></tr></table></figure>



<h4 id="2-3-9、主页组件"><a href="#2-3-9、主页组件" class="headerlink" title="2.3.9、主页组件"></a>2.3.9、主页组件</h4><p>在 <code>src/components</code> 目录中创建 <code>HomeView.vue</code> 充当用于主页组件。</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br><span class="line">82</span><br><span class="line">83</span><br><span class="line">84</span><br><span class="line">85</span><br><span class="line">86</span><br><span class="line">87</span><br><span class="line">88</span><br><span class="line">89</span><br><span class="line">90</span><br><span class="line">91</span><br><span class="line">92</span><br><span class="line">93</span><br><span class="line">94</span><br><span class="line">95</span><br><span class="line">96</span><br><span class="line">97</span><br><span class="line">98</span><br><span class="line">99</span><br><span class="line">100</span><br><span class="line">101</span><br><span class="line">102</span><br><span class="line">103</span><br><span class="line">104</span><br><span class="line">105</span><br><span class="line">106</span><br><span class="line">107</span><br><span class="line">108</span><br><span class="line">109</span><br><span class="line">110</span><br><span class="line">111</span><br><span class="line">112</span><br><span class="line">113</span><br><span class="line">114</span><br><span class="line">115</span><br><span class="line">116</span><br><span class="line">117</span><br><span class="line">118</span><br><span class="line">119</span><br><span class="line">120</span><br><span class="line">121</span><br><span class="line">122</span><br><span class="line">123</span><br><span class="line">124</span><br><span class="line">125</span><br><span class="line">126</span><br><span class="line">127</span><br><span class="line">128</span><br><span class="line">129</span><br><span class="line">130</span><br><span class="line">131</span><br><span class="line">132</span><br><span class="line">133</span><br></pre></td><td class="code"><pre><span class="line">&lt;template&gt;</span><br><span class="line">  &lt;div class=&quot;sign-in-wrapper&quot;&gt;</span><br><span class="line">    &lt;h3 class=&quot;title&quot;&gt;用户登录&lt;/h3&gt;</span><br><span class="line">    &lt;p class=&quot;message&quot;&gt;&#123;&#123;message&#125;&#125;&lt;/p&gt;</span><br><span class="line">    &lt;el-form label-position=&quot;right&quot; label-width=&quot;120px&quot; &gt;</span><br><span class="line">      &lt;keep-alive&gt;</span><br><span class="line">        &lt;component :is=&quot;componentName&quot; </span><br><span class="line">                   v-model:type=&quot;type&quot; </span><br><span class="line">                   v-model:identifier=&quot;identifier&quot;&gt;</span><br><span class="line">        &lt;/component&gt;</span><br><span class="line">      &lt;/keep-alive&gt;</span><br><span class="line">      &lt;el-form-item label=&quot;密码&quot;&gt;</span><br><span class="line">        &lt;el-input type=&quot;password&quot; v-model=&quot;password&quot; /&gt;</span><br><span class="line">      &lt;/el-form-item&gt;</span><br><span class="line">      &lt;el-form-item&gt;</span><br><span class="line">        &lt;el-button type=&quot;primary&quot; @click=&quot;signIn&quot;&gt;登录&lt;/el-button&gt;</span><br><span class="line">      &lt;/el-form-item&gt;</span><br><span class="line">    &lt;/el-form&gt;</span><br><span class="line">    &lt;el-radio-group v-model=&quot;componentName&quot; label=&quot;label position&quot;&gt;</span><br><span class="line">      &lt;el-radio-button label=&quot;account&quot;&gt;账号&lt;/el-radio-button&gt;</span><br><span class="line">      &lt;el-radio-button label=&quot;email&quot;&gt;邮箱&lt;/el-radio-button&gt;</span><br><span class="line">      &lt;el-radio-button label=&quot;tel&quot;&gt;手机号&lt;/el-radio-button&gt;</span><br><span class="line">    &lt;/el-radio-group&gt;</span><br><span class="line">  &lt;/div&gt;</span><br><span class="line">&lt;/template&gt;</span><br><span class="line"></span><br><span class="line">&lt;script&gt;</span><br><span class="line">import &#123;</span><br><span class="line">  ElForm,</span><br><span class="line">  ElFormItem,</span><br><span class="line">  ElInput,</span><br><span class="line">  ElButton,</span><br><span class="line">  ElRadioButton,</span><br><span class="line">  ElRadioGroup</span><br><span class="line">&#125; from &#x27;element-plus&#x27;;</span><br><span class="line"></span><br><span class="line">export default &#123;</span><br><span class="line">  name: &#x27;SignInView&#x27;,</span><br><span class="line">  data()&#123;</span><br><span class="line">    return &#123;</span><br><span class="line">      message: &#x27;&#x27;,</span><br><span class="line">      // 用来保存登录类型的属性</span><br><span class="line">      type: &#x27;&#x27;,</span><br><span class="line">      // 登录时使用的标识符(可能是邮箱、账号、手机号)</span><br><span class="line">      identifier: &#x27;&#x27;,</span><br><span class="line">      // 登录密码</span><br><span class="line">      password: &#x27;&#x27;,</span><br><span class="line">      componentName: &#x27;account&#x27;</span><br><span class="line">    &#125;</span><br><span class="line">  &#125;,</span><br><span class="line">  methods: &#123;</span><br><span class="line">    signIn()&#123;</span><br><span class="line">      console.log( this.type );</span><br><span class="line">      console.log( this.identifier );</span><br><span class="line">      console.log( this.password );</span><br><span class="line">    &#125;</span><br><span class="line">  &#125;,</span><br><span class="line">  components: &#123;</span><br><span class="line">    ElForm,</span><br><span class="line">    ElFormItem,</span><br><span class="line">    ElInput,</span><br><span class="line">    ElButton,</span><br><span class="line">    ElRadioButton,</span><br><span class="line">    ElRadioGroup,</span><br><span class="line">    &#x27;email&#x27; : &#123;</span><br><span class="line">      props:[ &#x27;type&#x27;, &#x27;identifier&#x27; ],</span><br><span class="line">      template: `&lt;el-form-item label=&quot;邮箱&quot;&gt;</span><br><span class="line">                  &lt;el-input v-model=&quot;email&quot; @change=&quot;handler&quot;/&gt;</span><br><span class="line">                 &lt;/el-form-item&gt;`,</span><br><span class="line">      data()&#123; return &#123; email: &#x27;&#x27; &#125; &#125;,</span><br><span class="line">      methods: &#123;</span><br><span class="line">        handler()&#123;</span><br><span class="line">          // 触发自定义事件</span><br><span class="line">          this.$emit( &#x27;update:identifier&#x27; , this.email );</span><br><span class="line">        &#125;</span><br><span class="line">      &#125;,</span><br><span class="line">      // 生命周期钩子</span><br><span class="line">      activated()&#123;</span><br><span class="line">        this.$emit( &#x27;update:type&#x27; , &#x27;email&#x27;);</span><br><span class="line">        this.$emit( &#x27;update:identifier&#x27; , this.email );</span><br><span class="line">        console.log( &#x27;email activated&#x27; );</span><br><span class="line">      &#125;,</span><br><span class="line">      // 因为在 email 组件中使用了 ElementPlus 组件所以需要注册</span><br><span class="line">      components: &#123; ElFormItem , ElInput &#125;</span><br><span class="line">    &#125;,</span><br><span class="line">    &#x27;account&#x27; : &#123;</span><br><span class="line">      template: `&lt;el-form-item label=&quot;账号&quot;&gt;</span><br><span class="line">                  &lt;el-input v-model=&quot;account&quot; @change=&quot;handler&quot;/&gt;</span><br><span class="line">                 &lt;/el-form-item&gt;`,</span><br><span class="line">      data()&#123; return &#123; account: &#x27;&#x27; &#125; &#125;,</span><br><span class="line">      methods: &#123;</span><br><span class="line">        handler()&#123;</span><br><span class="line">          // 触发自定义事件</span><br><span class="line">          this.$emit( &#x27;update:identifier&#x27; , this.account );</span><br><span class="line">        &#125;</span><br><span class="line">      &#125;,</span><br><span class="line">      // 生命周期钩子</span><br><span class="line">      activated()&#123;</span><br><span class="line">        this.$emit( &#x27;update:type&#x27; , &#x27;account&#x27;);</span><br><span class="line">        this.$emit( &#x27;update:identifier&#x27; , this.account );</span><br><span class="line">        console.log( &#x27;account activated&#x27; );</span><br><span class="line">      &#125;,</span><br><span class="line">      components: &#123; ElFormItem , ElInput &#125;</span><br><span class="line">    &#125;,</span><br><span class="line">    &#x27;tel&#x27;: &#123;</span><br><span class="line">      template: `&lt;el-form-item label=&quot;手机号&quot;&gt;</span><br><span class="line">                  &lt;el-input v-model=&quot;tel&quot; @change=&quot;handler&quot;/&gt;</span><br><span class="line">                 &lt;/el-form-item&gt;`,</span><br><span class="line">      data()&#123; return &#123; tel: &#x27;&#x27; &#125; &#125;,</span><br><span class="line">      methods: &#123;</span><br><span class="line">        handler()&#123;</span><br><span class="line">          // 触发自定义事件</span><br><span class="line">          this.$emit( &#x27;update:identifier&#x27; , this.tel );</span><br><span class="line">        &#125;</span><br><span class="line">      &#125;,</span><br><span class="line">      // 生命周期钩子</span><br><span class="line">      activated()&#123;</span><br><span class="line">        this.$emit( &#x27;update:type&#x27; , &#x27;tel&#x27;);</span><br><span class="line">        this.$emit( &#x27;update:identifier&#x27; , this.tel );</span><br><span class="line">        console.log( &#x27;email activated&#x27; );</span><br><span class="line">      &#125;,</span><br><span class="line">      components: &#123; ElFormItem , ElInput &#125;</span><br><span class="line">    &#125;</span><br><span class="line">  &#125;</span><br><span class="line">&#125;</span><br><span class="line">&lt;/script&gt;</span><br><span class="line"></span><br><span class="line">&lt;style&gt;</span><br><span class="line">.sign-in-wrapper &#123;</span><br><span class="line">  height: 300px;</span><br><span class="line">  background: #ffd;</span><br><span class="line">&#125;</span><br><span class="line">&lt;/style&gt;</span><br></pre></td></tr></table></figure>

<p>这个组件存在的主要目的是为了练习 <strong>动态组件</strong> 。</p>
<p>因为这个组件中使用 动态组件 ，所以导致在 <code>vite.config.js</code> 中添加了以下配置:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="attr">resolve</span>: &#123;</span><br><span class="line">  <span class="attr">alias</span>: &#123;</span><br><span class="line">    <span class="string">&#x27;vue&#x27;</span> : <span class="string">&#x27;vue/dist/vue.esm-bundler.js&#x27;</span></span><br><span class="line">  &#125;</span><br><span class="line">&#125;,</span><br></pre></td></tr></table></figure>







<h3 id="2-4、前端路由"><a href="#2-4、前端路由" class="headerlink" title="2.4、前端路由"></a>2.4、前端路由</h3><h4 id="2-4-1、与首页相关的路由"><a href="#2-4-1、与首页相关的路由" class="headerlink" title="2.4.1、与首页相关的路由"></a>2.4.1、与首页相关的路由</h4><p>在 <code>user-front-end</code> 项目下的 <code>src/routes</code> 目录中创建 <code>home.js</code> 文件:</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">const</span> routes = [</span><br><span class="line">  &#123;</span><br><span class="line">    <span class="attr">path</span>: <span class="string">&#x27;/&#x27;</span>,</span><br><span class="line">    <span class="attr">name</span>: <span class="string">&#x27;root&#x27;</span>,</span><br><span class="line">    <span class="attr">components</span>: &#123;</span><br><span class="line">        <span class="string">&#x27;header&#x27;</span>: <span class="function">() =&gt;</span> <span class="title function_">import</span>(<span class="string">&#x27;../components/HeaderView.vue&#x27;</span>),</span><br><span class="line">        <span class="string">&#x27;middle&#x27;</span>: <span class="function">() =&gt;</span> <span class="title function_">import</span>(<span class="string">&#x27;../components/HomeView.vue&#x27;</span>),</span><br><span class="line">        <span class="string">&#x27;footer&#x27;</span>: <span class="function">() =&gt;</span> <span class="title function_">import</span>(<span class="string">&#x27;../components/FooterView.vue&#x27;</span>)</span><br><span class="line">    &#125;,</span><br><span class="line">    <span class="attr">meta</span>: &#123;</span><br><span class="line">        <span class="attr">title</span>: <span class="string">&#x27;首页&#x27;</span></span><br><span class="line">    &#125;</span><br><span class="line">  &#125;</span><br><span class="line">];</span><br><span class="line"></span><br><span class="line"><span class="keyword">export</span> <span class="keyword">default</span> routes ;</span><br></pre></td></tr></table></figure>





<h4 id="2-4-2、与用户相关的路由"><a href="#2-4-2、与用户相关的路由" class="headerlink" title="2.4.2、与用户相关的路由"></a>2.4.2、与用户相关的路由</h4><p>在 <code>user-front-end</code> 项目下的 <code>src/routes/user.js</code> 文件中定义与用户相关的路由记录。</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br></pre></td><td class="code"><pre><span class="line"></span><br><span class="line"><span class="keyword">const</span> routes = [</span><br><span class="line">  &#123;</span><br><span class="line">    <span class="attr">path</span>: <span class="string">&#x27;/sign/in&#x27;</span>,</span><br><span class="line">    <span class="attr">name</span>: <span class="string">&#x27;signIn&#x27;</span>,</span><br><span class="line">    <span class="attr">components</span>: &#123;</span><br><span class="line">        <span class="string">&#x27;header&#x27;</span>: <span class="function">() =&gt;</span> <span class="title function_">import</span>(<span class="string">&#x27;../components/HeaderView.vue&#x27;</span>),</span><br><span class="line">        <span class="string">&#x27;middle&#x27;</span>: <span class="function">() =&gt;</span> <span class="title function_">import</span>(<span class="string">&#x27;../components/SignInView.vue&#x27;</span>),</span><br><span class="line">        <span class="string">&#x27;footer&#x27;</span>: <span class="function">() =&gt;</span> <span class="title function_">import</span>(<span class="string">&#x27;../components/FooterView.vue&#x27;</span>)</span><br><span class="line">    &#125;,</span><br><span class="line">    <span class="attr">meta</span>: &#123;</span><br><span class="line">        <span class="attr">title</span>: <span class="string">&#x27;用户登录&#x27;</span></span><br><span class="line">    &#125;</span><br><span class="line">  &#125;,</span><br><span class="line">  &#123;</span><br><span class="line">    <span class="attr">path</span>: <span class="string">&#x27;/sign/up&#x27;</span>,</span><br><span class="line">    <span class="attr">name</span>: <span class="string">&#x27;signUp&#x27;</span>,</span><br><span class="line">    <span class="attr">components</span>: &#123;</span><br><span class="line">        <span class="string">&#x27;header&#x27;</span>: <span class="function">() =&gt;</span> <span class="title function_">import</span>(<span class="string">&#x27;../components/HeaderView.vue&#x27;</span>),</span><br><span class="line">        <span class="string">&#x27;middle&#x27;</span>: <span class="function">() =&gt;</span> <span class="title function_">import</span>(<span class="string">&#x27;../components/SignUpView.vue&#x27;</span>),</span><br><span class="line">        <span class="string">&#x27;footer&#x27;</span>: <span class="function">() =&gt;</span> <span class="title function_">import</span>(<span class="string">&#x27;../components/FooterView.vue&#x27;</span>)</span><br><span class="line">    &#125;,</span><br><span class="line">    <span class="attr">meta</span>: &#123;</span><br><span class="line">        <span class="attr">title</span>: <span class="string">&#x27;用户注册&#x27;</span></span><br><span class="line">    &#125;</span><br><span class="line">  &#125;,</span><br><span class="line">  &#123;</span><br><span class="line">    <span class="attr">path</span>: <span class="string">&#x27;/sign/out&#x27;</span>,</span><br><span class="line">    <span class="attr">name</span>: <span class="string">&#x27;signOut&#x27;</span>,</span><br><span class="line">    <span class="attr">beforeEnter</span>: <span class="function">(<span class="params">to,<span class="keyword">from</span></span>)=&gt;</span>&#123;</span><br><span class="line">      <span class="comment">// 从 sessionStorage 中删除认证信息</span></span><br><span class="line">      sessionStorage.<span class="title function_">removeItem</span>( <span class="string">&#x27;token&#x27;</span> );</span><br><span class="line">      <span class="comment">// 终止当前导航并去往登录页面</span></span><br><span class="line">      <span class="keyword">return</span> &#123; <span class="attr">name</span>: <span class="string">&#x27;signIn&#x27;</span> &#125;</span><br><span class="line">    &#125;</span><br><span class="line">  &#125;,</span><br><span class="line">  &#123;</span><br><span class="line">    <span class="attr">path</span>: <span class="string">&#x27;/list&#x27;</span>,</span><br><span class="line">    <span class="attr">name</span>: <span class="string">&#x27;list&#x27;</span>,</span><br><span class="line">    <span class="attr">components</span>: &#123;</span><br><span class="line">        <span class="string">&#x27;header&#x27;</span>: <span class="function">() =&gt;</span> <span class="title function_">import</span>(<span class="string">&#x27;../components/HeaderView.vue&#x27;</span>),</span><br><span class="line">        <span class="string">&#x27;middle&#x27;</span>: <span class="function">() =&gt;</span> <span class="title function_">import</span>(<span class="string">&#x27;../components/ListView.vue&#x27;</span>),</span><br><span class="line">        <span class="string">&#x27;footer&#x27;</span>: <span class="function">() =&gt;</span> <span class="title function_">import</span>(<span class="string">&#x27;../components/FooterView.vue&#x27;</span>)</span><br><span class="line">    &#125;,</span><br><span class="line">    <span class="attr">meta</span>: &#123;</span><br><span class="line">        <span class="attr">title</span>: <span class="string">&#x27;用户列表&#x27;</span></span><br><span class="line">    &#125;</span><br><span class="line">  &#125;,</span><br><span class="line">  &#123;</span><br><span class="line">    <span class="attr">path</span>: <span class="string">&#x27;/add&#x27;</span>,</span><br><span class="line">    <span class="attr">name</span>: <span class="string">&#x27;add&#x27;</span>,</span><br><span class="line">    <span class="attr">components</span>: &#123;</span><br><span class="line">        <span class="string">&#x27;header&#x27;</span>: <span class="function">() =&gt;</span> <span class="title function_">import</span>(<span class="string">&#x27;../components/HeaderView.vue&#x27;</span>),</span><br><span class="line">        <span class="string">&#x27;middle&#x27;</span>: <span class="function">() =&gt;</span> <span class="title function_">import</span>(<span class="string">&#x27;../components/AddView.vue&#x27;</span>),</span><br><span class="line">        <span class="string">&#x27;footer&#x27;</span>: <span class="function">() =&gt;</span> <span class="title function_">import</span>(<span class="string">&#x27;../components/FooterView.vue&#x27;</span>)</span><br><span class="line">    &#125;,</span><br><span class="line">    <span class="attr">meta</span>: &#123;</span><br><span class="line">        <span class="attr">title</span>: <span class="string">&#x27;新增用户&#x27;</span></span><br><span class="line">    &#125;</span><br><span class="line">  &#125;,</span><br><span class="line">  &#123;</span><br><span class="line">    <span class="attr">path</span>: <span class="string">&#x27;/set&#x27;</span>,</span><br><span class="line">    <span class="attr">name</span>: <span class="string">&#x27;set&#x27;</span>,</span><br><span class="line">    <span class="attr">components</span>: &#123;</span><br><span class="line">        <span class="string">&#x27;header&#x27;</span>: <span class="function">() =&gt;</span> <span class="title function_">import</span>(<span class="string">&#x27;../components/HeaderView.vue&#x27;</span>),</span><br><span class="line">        <span class="string">&#x27;middle&#x27;</span>: <span class="function">() =&gt;</span> <span class="title function_">import</span>(<span class="string">&#x27;../components/SettingsView.vue&#x27;</span>),</span><br><span class="line">        <span class="string">&#x27;footer&#x27;</span>: <span class="function">() =&gt;</span> <span class="title function_">import</span>(<span class="string">&#x27;../components/FooterView.vue&#x27;</span>)</span><br><span class="line">    &#125;,</span><br><span class="line">    <span class="attr">meta</span>: &#123;</span><br><span class="line">        <span class="attr">title</span>: <span class="string">&#x27;个人设置&#x27;</span></span><br><span class="line">    &#125;</span><br><span class="line">  &#125;,</span><br><span class="line">];</span><br><span class="line"></span><br><span class="line"><span class="keyword">export</span> <span class="keyword">default</span> routes ;</span><br></pre></td></tr></table></figure>



<h3 id="2-5、Fetch-API"><a href="#2-5、Fetch-API" class="headerlink" title="2.5、Fetch API"></a>2.5、<code>Fetch API</code></h3><p><a target="_blank" rel="noopener" href="https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API">Fetch API</a></p>
<p><a target="_blank" rel="noopener" href="https://developer.mozilla.org/zh-CN/docs/Web/API/Request">Request</a></p>
<p><a target="_blank" rel="noopener" href="https://developer.mozilla.org/zh-CN/docs/Web/API/Response">Response</a></p>

      

      
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